id
int32 0
32.5k
| code
stringlengths 95
8.4k
| label
stringclasses 65
values |
|---|---|---|
13,200 |
//********************************
//*???????????? **
//*?????? 1300012855 **
//*???2013.10.11 **
//********************************
int main(void)
{
int n; // n???????
double a, b, c; // ???????
double x1, x2; // ??????
double delta, front, back; // delta?????front?-b/2a?back?sqrt(-delta)/2a
cin >> n;
for(int i = 1; i <= n; i++) // ??????i???n??n?????
{
cin >> a >> b >> c; // ??????
delta = b * b - 4 * a * c; // ?????
if(delta < 0) // ???????????????????front?back???
{
front = -b / (2 * a); // ??
if(front == 0) front = - front;// ??-0.00000??
back = sqrt(-delta) / (2 * a); // ??
cout << fixed << setprecision(5) << "x1=" << front << '+' << back << "i;";
cout << fixed << setprecision(5) << "x2=" << front << '-' << back << 'i' << endl;
}
else
{
if(delta == 0) // ?????0?????????
{
x1 = -b / (2 * a); // ????????????
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
x1 = (-b + sqrt(delta)) / (2 * a); // ?????????????
x2 = (-b - sqrt(delta)) / (2 * a);
cout << fixed << setprecision(5) << "x1=" << x1 << ';' << "x2=" << x2 << endl;
}
}
}
return 0;
}
|
27
|
13,201 |
int main(void)
{
double a=1.0,b=1.0,c=1.0;
int n=1,k=1;
scanf("%d",&n);
double e[100],f[100],g[100];
for(k=0;k<n;k++)
{
scanf("%lf %lf %lf",&e[k],&f[k],&g[k]);
}
for(k=0;k<n;k++)
{
a=e[k];b=f[k];c=g[k];
if(b*b-4*a*c==0)
printf("x1=x2=%.5lf\n",-b/(2*a));
else if(b*b-4*a*c>0)
printf("x1=%.5lf;x2=%.5lf\n",(-b + sqrt(b*b-4*a*c))/(2*a),(-b - sqrt(b*b-4*a*c))/(2*a));
else if(b*b-4*a*c<0)
{ if(b==0)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",sqrt(-(b*b-4*a*c))/(2*a),sqrt(-(b*b-4*a*c))/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",-b/(2*a),sqrt(-(b*b-4*a*c))/(2*a),-b/(2*a),-sqrt(-(b*b-4*a*c))/(2*a));
}
}
return 0;
}
|
27
|
13,202 |
void gen(double a,double b,double c);
int main()
{
double *a,*b,*c;
int n,i;
scanf("%d",&n);
a=(double*)malloc(n*sizeof(double));
b=(double*)malloc(n*sizeof(double));
c=(double*)malloc(n*sizeof(double));
for(i=0;i<=n-1;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<=n-1;i++)
{
gen(a[i],b[i],c[i]);
}
free(a);
free(b);
free(c);
return 0;
}
void gen(double a,double b,double c)
{
double d,x1,x2,i1;
d=b*b-4*a*c;
if(d>0)
{
x1=(0-b+sqrt(d))/(2*a);
x2=(0-b-sqrt(d))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
if (d==0) printf("x1=x2=%.5f\n",(0-b)/(2*a));
else
{
x1=(0-b)/(2*a);
i1=(sqrt(0-d))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,i1,x1,i1);
}
}
}
|
27
|
13,203 |
int main()
{
int n,i=0;
scanf("%d",&n);
for(i=0;i<n;i++)
{ float a,b,c,d;
double disc,x1,x2,realpart,imagpart;
scanf ("%f%f%f",&a,&b,&c);
disc=b*b-4*a*c;
if(fabs(disc)==0)
printf("x1=x2=%.5f\n",-b/(2*a));
else if (disc>0)
{x1=(-b+sqrt(disc))/(2*a);
x2=(-b-sqrt(disc))/(2*a);
printf ("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
printf("x1=%.5f+%.5fi;",realpart,imagpart);
printf("x2=%.5f-%.5fi\n",realpart,imagpart);
}
}
return 0;
}
|
27
|
13,204 |
main()
{
int n,i;
float a[1000],gen,pan,p,q;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f%f%f",&a[3*i],&a[3*i+1],&a[3*i+2]);
}
for(i=0;i<n;i++)
{
pan=a[3*i+1]*a[3*i+1]-4*a[3*i]*a[3*i+2];
if(fabs(pan)<=0.00001)
printf("x1=x2=%.5f\n",-a[3*i+1]/(2*a[3*i]));
gen=sqrt(fabs(pan));
p=-a[3*i+1]/(2*a[3*i]),q=gen/(2*a[3*i]);
if(fabs(p)<=0.000001)
p=0.00000;
if(pan>0.00001)
printf("x1=%.5f;x2=%.5f\n",p+q,p-q);
if(pan<-0.00001)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
//printf("%f%f%f",a[0],a[1],a[2]);
}
|
27
|
13,205 |
void main()
{
double a,b,c,s;
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
s=b*b-4*a*c;
if(s>0)
printf("x1=%.5f;x2=%.5f\n",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a));
else if(s==0)
{
printf("x1=x2=%.5f\n",-b/(2*a));
}
else if(s<0)
{if(-b/(2*a)!=0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),sqrt(-(b*b-4*a*c))/(2*a),-b/(2*a),sqrt(-(b*b-4*a*c))/(2*a));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b/(2*a),sqrt(-(b*b-4*a*c))/(2*a),b/(2*a),sqrt(-(b*b-4*a*c))/(2*a));}
}
}
|
27
|
13,206 |
int main()
{
int k,num;
cin >> num;
for ( k=0 ; k<num ; k++ )
{
double a,b,c,x1,x2,sb,xb;
cin>>a>>b>>c;
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
sb = -b/(2*a);
xb = (sqrt(4*a*c-b*b))/(2*a);
if (fabs(sb)<0.000001)
sb=0;
cout<<fixed;
if ((b*b-4*a*c)>=0)
{
if (x1==x2) cout << setprecision(5) << "x1=x2=" << x1 << endl;
else cout << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
else cout << setprecision(5) << "x1=" << sb << "+" << xb << "i" << ";" << "x2=" << sb << "-" << xb << "i" << endl;
}
return 0;
}
|
27
|
13,207 |
int main(){
int n;
scanf("%d",&n);
int i;
for(i=0;i<n;i++){
float a,b,c;
scanf("%f %f %f",&a,&b,&c);
if(b*b-4*a*c>=0){
if((-b+sqrt(b*b-4*a*c))/(2*a)==(-b-sqrt(b*b-4*a*c))/(2*a)){
printf("x1=x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a));
}
else {printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a));
}
}
else{
if(b==0)b=-b;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2*a),sqrt(-b*b+4*a*c)/(2*a),-b/(2*a),sqrt(-b*b+4*a*c)/(2*a));
}
}
return 0;
}
|
27
|
13,208 |
int main()
{
int m,i;
double a,b,c,u,v;
struct f{
double a,b,c,u,v;
}f[100];
scanf("%d\n",&m);
for(i=0;i<m;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
f[i].a=a;
f[i].b=b;
f[i].c=c;
f[i].u=-b/(2*a);
if(b==0)
f[i].u=0;
f[i].v=sqrt(fabs(b*b-4*a*c))/(2*a);//double use fabs
}
for(i=0;i<m;i++)
{
if(f[i].b*f[i].b-4*f[i].a*f[i].c>0)//f[i].a=a;f[i].b=b;f[i].c=c;de yiyi jiu zai ci
{
printf("x1=%.5f;x2=%.5f\n",f[i].u+f[i].v,f[i].u-f[i].v);
}
else if(f[i].b*f[i].b-4*f[i].a*f[i].c==0)
{
printf("x1=x2=%.5f\n", f[i].u+f[i].v,f[i].u-f[i].v);
}
else
{
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",f[i].u,f[i].v,f[i].u,f[i].v);
}
}
return 0;
}
|
27
|
13,209 |
main()
{
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
double ai,bi,ci,di,ei,fi,gi,x1i,x2i;
scanf("%lf %lf %lf",&ai,&bi,&ci);
di=bi*bi-4*ai*ci ;
if(di>0)
{
gi= sqrt(di);
x1i=(-bi+gi)/(2*ai);
x2i=(-bi-gi)/(2*ai);
printf("x1=%.5lf;x2=%.5lf\n",x1i,x2i);
}
else if(di==0)
{
x1i=x2i=(-bi)/(2*ai);
printf("x1=x2=%.5lf\n",x1i);
}
else if(di<0)
{
gi=sqrt(-di) ;
if(bi==0) ei=bi/(2*ai);
else
{
ei=-bi/(2*ai);
}
fi=(gi)/(2*ai);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",ei,fi,ei,fi);
}
}
}
|
27
|
13,210 |
main()
{
int n;
scanf("%d",&n);
double e[100][3];
int i;
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&e[i][0],&e[i][1],&e[i][2]);
}
double a[100][2];
for(i=0;i<n;i++)
{
if((e[i][1]*e[i][1]-4*e[i][0]*e[i][2])>0)
{
a[i][0]=(-e[i][1] + sqrt(e[i][1]*e[i][1]-4*e[i][0]*e[i][2]))/(2*e[i][0]);
a[i][1]=(-e[i][1] - sqrt(e[i][1]*e[i][1]-4*e[i][0]*e[i][2]))/(2*e[i][0]);
printf("x1=%.5lf;x2=%.5lf\n",a[i][0],a[i][1]);
}
if((e[i][1]*e[i][1]-4*e[i][0]*e[i][2])==0)
{
a[i][0]=(-e[i][1])/(2*e[i][0]);
a[i][1]=(-e[i][1])/(2*e[i][0]);
printf("x1=x2=%.5lf\n",a[i][0]);
}
if((e[i][1]*e[i][1]-4*e[i][0]*e[i][2])<0)
{
char c='i';
double p,q;
if(e[i][1]==0)
{
p=(e[i][1])/(2*e[i][0]);
q=(sqrt(4*e[i][0]*e[i][2]-e[i][1]*e[i][1]))/(2*e[i][0]);
printf("x1=%.5lf+%.5lf%c;x2=%.5lf-%.5lf%c\n",p,q,c,p,q,c);
}
else
{
p=(-e[i][1])/(2*e[i][0]);
q=(sqrt(4*e[i][0]*e[i][2]-e[i][1]*e[i][1]))/(2*e[i][0]);
printf("x1=%.5lf+%.5lf%c;x2=%.5lf-%.5lf%c\n",p,q,c,p,q,c);
}
}
}
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
}
|
27
|
13,211 |
int main()
{
int n,i;
double a,b,c;
scanf("%d\n",&n);
for(i=0;i<n;i++){
scanf("%lf %lf %lf",&a, &b, &c);
if(b*b-4*a*c!=0){
if(a>0){
if(b*b-4*a*c>0){
printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a));
}
else if(b*b-4*a*c<0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2*a),sqrt(4*a*c-b*b)/(2*a),-b/(2*a),sqrt(4*a*c-b*b)/(2*a));
}
}
else if(a<0){
if(b*b-4*a*c>0){
printf("x1=%.5lf;x2=%.5lf\n",(-b-sqrt(b*b-4*a*c))/(2*a),(-b+sqrt(b*b-4*a*c))/(2*a));
}
else if(b*b-4*a*c<0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2*a),-sqrt(4*a*c-b*b)/(2*a),-b/(2*a),-sqrt(4*a*c-b*b)/(2*a));
}
}
}
else{
printf("x1=x2=%.5lf\n",-b/(2*a));
}
}
return 0;
}
|
27
|
13,212 |
int main()
{
int n,m;
float a,b,c;
double x1,x2;
cin>>n;
for(m=1;m<=n;m=m+1)
{
cin>>a>>b>>c;
x1=(-b+sqrt(b*b-4*a*c))/(2*a),x2=(-b-sqrt(b*b-4*a*c))/(2*a);
if(b*b-4*a*c>0)
{
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
else if(b*b-4*a*c<=0)
{
if(b*b-4*a*c==0)
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<-b/(2*a)+1-1<<"+"<<sqrt(4*a*c-b*b)/(2*a)<<"i"<<";"<<"x2="<<-b/(2*a)+1-1<<"-"<<sqrt(4*a*c-b*b)/(2*a)<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,213 |
int main(int argc, char* argv[])
{
int n,i;
double a[100],b[100],c[100];
double x1[100],x2[100];
double d,e,f;
scanf ("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
d=(-1)*b[i]/(2*a[i]);
e=b[i]*b[i]-4*a[i]*c[i];
if (e>0)
{
x1[i]=d+sqrt(e)/(2*a[i]);
x2[i]=d-sqrt(e)/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
if(e==0)
{
x1[i]=d;
x2[i]=d;
printf("x1=x2=%.5lf\n",x1[i]);
}
if (e<0)
{
e=(-1)*e;
f=sqrt(e)/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",d,f,d,f);
}
}
return 0;
}
|
27
|
13,214 |
//********************************
//*???????????? **
//*?????? 1300012773 **
//*???2013.10.9 **
//********************************
int main()
{
double a, b, c, delta, x1, x2; //?????????3???abc????delta????x1?x2
int n; //????n
cin >> n; //??????
for(int i = 1; i <= n; i++)
{
cin >> a >> b >> c; //?????????????
delta = b * b - 4 * a * c; //???????
cout << fixed << setprecision(5); //???????
if (delta == 0) //???????????????
{
x1 = x2 = -b/(2 * a); //??????
cout << "x1=x2=" << x1 <<endl; //??????
}
else
{
if(delta > 0) //????????????????
{
//????????
x1 = (-b + sqrt(delta))/(2 * a);
x2 = (-b - sqrt(delta))/(2 * a);
cout << "x1=" << x1 << ';' << "x2=" << x2 <<endl; //?????
}
else //???????????????
{
x1 = x2 = -b /(2 * a); //?????????
delta = sqrt(-delta)/(2 * a); //????
if(abs(x1)<1e-6) x1=x2=1e-7; //?????0 ??0.00000???-0.00000
cout << "x1=" << x1 << '+' << delta << 'i' << ';';
cout << "x2=" << x2 << '-' << delta << 'i' <<endl; //??????
}
}
}
return 0;
}
|
27
|
13,215 |
void main()
{
double k,t,m,l;
int h,n;
double u[32768],v[32768],w[32768],e[32768],f[32768],g[32768];
scanf("%d",&n);
h=1;
while(h<=n)
{
scanf("%lf %lf %lf",&u[h],&v[h],&w[h]);
k=v[h]*v[h]-4*u[h]*w[h];
t=-k;
if(k>0)
{
e[h]=-v[h]/(2*u[h]);
f[h]=sqrt(k)/(2*u[h]);
g[h]=0;
}
else if(k<0)
{
e[h]=-v[h]/(2*u[h]);
f[h]=sqrt(t)/(2*u[h]);
g[h]=1;
}
else
{
e[h]=-v[h]/(2*u[h]);
f[h]=0;
g[h]=2;
}
h++;
}
h=1;
while(h<=n)
{
m=e[h]+f[h];
l=e[h]-f[h];
if(fabs(m)<1e-6)
m=0;
if(fabs(l)<1e-6)
l=0;
if(fabs(e[h])<1e-6)
e[h]=0;
if(fabs(f[h])<1e-6)
f[h]=0;
if(g[h]==0)
printf("x1=%.5f;x2=%.5f\n",m,l);
if(g[h]==1)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e[h],f[h],e[h],f[h]);
if(g[h]==2)
printf("x1=x2=%.5f\n",m);
h++;
}
}
|
27
|
13,216 |
int main()
{
int n;
scanf("%d",&n);
int i=1;
while(i<=n)
{
double a,b,c;
scanf("%lf %lf %lf",&a,&b,&c);
double x1,x2;
if (b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if (b*b-4*a*c<0.00000001&&b*b-4*a*c>-0.00000001)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
if(b*b-4*a*c<-0.00000001)
{
double n,m;
n=-b/(2*a);
m=sqrt(4*a*c-b*b)/(2*a);
if(fabs(n)<0.00001)
n=0.00000;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",n,m,n,m);
}
i=i+1;}
}
|
27
|
13,217 |
/*
* 1.cpp
*
* Created on: 2012-11-1
* Author: AK
*/
int main(){
int n;
double a,b,c,p;
cin>>n;
for(;n>=1;n--){
cin>>a>>b>>c;
p=b*b-4*a*c;
if(p>0) cout<<"x1="<<fixed<<setprecision(5)<<0+(-b+sqrt(p))/(2*a)<<";x2="<<0+(-b-sqrt(p))/(2*a)<<endl;
else if(p==0) cout<<"x1=x2="<<fixed<<setprecision(5)<<0+(-b)/(2*a)<<endl;
else cout<<fixed<<setprecision(5)<<"x1="<<0+(-b)/(2*a)<<'+'<<sqrt(-p)/(2*a)<<"i;x2="<<0+(-b)/(2*a)<<'-'<<sqrt(-p)/(2*a)<<"i"<<endl;
}
return 0;
}
|
27
|
13,218 |
int main()
{
int n,k;
cin>>n;
for(k=1;k<=n;k++)
{
float a,b,c;
double x1,x2;
cin>>a>>b>>c;
cout<<fixed;
if((b*b-4*a*c)>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
x2 = (-b - sqrt(b*b-4*a*c))/(2*a) ;
if (fabs(x1) < 1e-5)
{
x1 = 0;
}
else if (fabs(x2) < 1e-5)
{
x2 = 0;
}
cout<<"x1="<<setprecision(5)<<x1<<";"<<"x2="<<setprecision(5)<<x2<<endl;
}
else if((b*b-4*a*c)==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
if (fabs(x1) < 1e-5)
{
x1 = 0;
}
cout<<"x1=x2="<<setprecision(5)<<x1<<endl;
}
else
{
double a1,b1;
a1=(-b/(2*a));
b1=(sqrt(4*a*c-b*b)/2/a);
if(fabs( a1)<=1e-5)
{
a1=0;
}
else if(fabs(b1) < 1e-5)
{
b1=0;
}
cout<<"x1="<<setprecision(5)<<a1<<"+"<<b1<<"i"<<";"<<"x2="<<setprecision(5)<<a1<<"-"<<b1<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,219 |
int main()
{
struct pare
{
double a;
double b;
double c;
}p1[k];
int n;
scanf("%d",&n);
int i;
for(i = 0; i < n; i++)
{
scanf("%lf%lf%lf",&p1[i].a,&p1[i].b,&p1[i].c);
}
double x1,x2;
double xx,xs;
for(i = 0; i < n; i++)
{
if( (p1[i].b*p1[i].b) - 4 * p1[i].a * p1[i].c > 0)
{
x1 = ( -p1[i].b + sqrt ( p1[i].b*p1[i].b - 4 * p1[i].a * p1[i].c ) ) / (2*p1[i].a);
x2 = ( -p1[i].b - sqrt ( p1[i].b*p1[i].b - 4 * p1[i].a * p1[i].c ) ) / (2*p1[i].a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if( (p1[i].b*p1[i].b) - 4 * p1[i].a * p1[i].c == 0)
{
x1 = -p1[i].b / (2*p1[i].a);
printf("x1=x2=%.5lf\n",x1);
}
if( p1[i].b*p1[i].b - 4 * p1[i].a * p1[i].c < 0)
{
xs = -p1[i].b / (2*p1[i].a);
xx = ( sqrt ( -p1[i].b*p1[i].b + 4 * p1[i].a * p1[i].c ) ) / (2*p1[i].a);
if ( p1[i].b == 0)
{
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",xx,xx);
}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",xs,xx,xs,xx);
}
}
}
return 0;
}
|
27
|
13,220 |
int main()
{
int num;
double *d,*e,*f,x1,x2,x3,x4,a,b,c;
scanf("%d",&num);
d=(double *)malloc(num*sizeof(double));
e=(double *)malloc(num*sizeof(double));
f=(double *)malloc(num*sizeof(double));
int i;
for(i=0;i<num;i++)
{
scanf("%lf %lf %lf",d+i,e+i,f+i);
}
for(i=0;i<num;i++)
{
a=d[i];
b=e[i];
c=f[i];
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a)+0;
x2 = (-b - sqrt(b*b-4*a*c))/(2*a)+0;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(b*b-4*a*c==0)
{
x1 = (-b)/(2*a)+0;
printf("x1=x2=%.5lf\n",x1);
}
if(b*b-4*a*c<0)
{
x1 = (-b)/(2*a)+0;
x2 = (-b)/(2*a)+0;
x3=sqrt(-b*b+4*a*c)/(2*a);
x4=sqrt(-b*b+4*a*c)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x3,x2,x4);
}
}
return 0;
}
|
27
|
13,221 |
void jie(float a,float b,float c)
{
float p,disc,q,x1,x2;
if (b/(2*a)!=0)
p=-b/(2*a);
else
p=b/(2*a);
disc=b*b-4*a*c;
if (disc==0)
printf("\nx1=x2=%5.5f\n",p);
else
if (disc>=0)
{q=sqrt(disc)/(2*a);
x1=p+q;x2=p-q;
printf("\nx1=%5.5f;x2=%5.5f\n",x1,x2);}
else
{q=sqrt(-disc)/(2*a);
printf("\nx1=%5.5f+%5.5fi;x2=%5.5f-%5.5fi\n",p,q,p,q);}
}
int main()
{ float *a,*b,*c;
int n,i;
scanf ("%d",&n);
a= (float*)malloc(n*sizeof(float)) ;
b= (float*)malloc(n*sizeof(float)) ;
c= (float*)malloc(n*sizeof(float)) ;
for (i=1;i<=n;i++)
scanf ("%f %f %f",&a[i],&b[i],&c[i]);
for (i=1;i<=n;i++)
jie(a[i],b[i],c[i]);
return 0;
}
|
27
|
13,222 |
int main()
{
int n,i;
float a[100],b[100],c[100];
double x1,x2,y,s,z;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%f%f%f",&a[i],&b[i],&c[i]);
}
for(i=1;i<=n;i++)
{
y=b[i]*b[i]-4*a[i]*c[i];
if(y>=0.00)
{
x1=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
if(x1==x2)
{
printf("x1=x2=%.5f\n",x1);
}
else
{
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
}
else
{
z=sqrt(-y)/(2*a[i]);
if(b[i]==0.0)
{
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",z,z);
}
else
{
s=-b[i]/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",s,z,s,z);
}
}
}
return 0;
}
|
27
|
13,223 |
int main()
{
int n,ri;
double a, b, c, d;
scanf("%d", &n);
for(ri = 1; ri <= n; ri++){
scanf("%lf %lf %lf", &a, &b, &c);
d=b*b-4*a*c;
if(a==0){if(b==0){if(c==0){printf("???????????!\n");}
else{printf("a?b?0?c??0??????\n");}}
else{printf("x=%.5f\n", -c/b);}
}
else{if(d>0){printf("x1=%.5f;", (-b+sqrt(d))/(2*a));
printf("x2=%.5f\n", (-b-sqrt(d))/(2*a));}
else{if(d==0){printf("x1=x2=%.5f\n", (-b+sqrt(d))/(2*a));}
else{if(d<0){if(b==0){printf("x1=%.5f+%.5fi;",b/(2*a), sqrt(-d)/(2*a));printf("x2=%.5f-%.5fi\n", b/(2*a), sqrt(-d)/(2*a));}
else{if(d<0){if(b!=0){printf("x1=%.5f+%.5fi;",-b/(2*a), sqrt(-d)/(2*a));printf("x2=%.5f-%.5fi\n", -b/(2*a), sqrt(-d)/(2*a));}
}
}
}
}
}
}
}
}
|
27
|
13,224 |
int main(int argc, char* argv[])
{
int n,i;
float a[100],b[100],c[100];
scanf("%d",&n);
for (i=0;i<n;i++){
scanf("%f%f%f",&a[i],&b[i],&c[i]);
}
for (i=0;i<n;i++){
if(a[i]!=0){
double delta,m,n,x1,x2;
delta=b[i]*b[i]-4*a[i]*c[i];
if(b[i]==0)
m=0;
else
m=-(b[i]/(2*a[i]));
n=sqrt(fabs(delta))/(2*a[i]);
if(delta==0){
printf("x1=x2=%.5f\n",m);
}
else if(delta>0){
x1=m+n;
x2=m-n;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else{
if (b[i]==0){
printf("x1=-%.5f+%.5fi;",m,n);
printf("x2=-%.5f-%.5fi\n",m,n);
}
else{
printf("x1=%.5f+%.5fi;",m,n);
printf("x2=%.5f-%.5fi\n",m,n);
}
}
}
}
return 0;
}
|
27
|
13,225 |
main()
{ double a,b,c,a1,a2;
int n,d;
d = 1;
scanf ("%d",&n);
while (d <= n)
{
scanf ("%lf %lf %lf",&a,&b,&c);
a1 = -b/(2*a);
if (a1 == 0)
a1 = 0;
else a1 = -b/(2*a);
if ((b*b-4*a*c)==0)
{a2 = 0;
printf ("x1=x2=%.5lf\n",a1);}
else if ((b*b-4*a*c)<0)
{a2 = (sqrt ( 4 * a* c-b * b))/(2 * a);
printf ("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",a1,a2,a1,a2);}
else if ((b*b-4*a*c)>0)
{a2 = (sqrt (b * b - 4 * a* c))/(2 * a);
printf ("x1=%.5lf;x2=%.5lf\n",a1+a2,a1-a2);}
d = d + 1;
}
}
|
27
|
13,226 |
int main()
{
int n;
double a, b, c, delta;
double real1, real2, i1, i2, x1, x2;
int zero(double a);
scanf("%d", &n);
while (n > 0)
{
scanf("%lf %lf %lf", &a, &b, &c);
delta = b * b - 4 * a * c;
if (zero(delta) == 1)
{
x1 = (-b + sqrt(delta)) / (2 * a);
x2 = (-b - sqrt(delta)) / (2 * a);
// if (!zero(x1)) x1 = 0;
// if (!zero(x2)) x2 = 0;
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if (zero(delta) == 0)
{
x1 = (-b + sqrt(delta)) / (2 * a);
// if (!zero(x1)) x1 = 0;
printf("x1=x2=%.5lf\n", x1);
}
else
{
delta = -delta;
real1 = -b / (2 * a);
real2 = -b / (2 * a);
i1 = sqrt(delta) / (2 * a);
i2 = sqrt(delta) / (2 * a);
// if (!zero(real1)) real1 = 0;
// if (!zero(real2)) real2 = 0;
// if (!zero(i1)) i1 = 0;
// if (!zero(i2)) i2 = 0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", real1, i1, real2, i2);
}
n--;
}
return 0;
}
int zero(double a)
{
if (fabs(a) > 1e-6)
if (a > 0) return 1;
else return -1;
else return 0;
}
|
27
|
13,227 |
int main()
{
#define i
int n,k;
float a,b,c;
scanf("%d",&n);
for (k=0;k<n;k++)
{
scanf("%f%f%f",&a,&b,&c);
if (b!=0)
{
if (b*b==4*a*c)
printf("x1=x2=%.5lf\n",-b/2/a);
else if (b*b-4*a*c>0)
printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/2/a,sqrt(4*a*c-b*b)/(2*a),-b/2/a,sqrt(4*a*c-b*b)/(2*a));
}
else
{
if (a*c<0)
printf("x1=0.00000+%.5lf;x2=0.00000+%.5lf\n",(sqrt(b*b-4*a*c))/(2*a),(-sqrt(b*b-4*a*c))/(2*a));
if (a*c>0)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",sqrt(4*a*c-b*b)/2/a,sqrt(4*a*c)/2/a);
}
}
return 0;
}
|
27
|
13,228 |
/*
???:????????
???:??
????:2011.9.16
*/
int main() //???
{ //?????
int n,num;
double a,b,c,d,e,f;
cin >> num; //??????
for(n=0; n<num; n++)
{ //????
cin >> a >> b >> c ; //??????
d = b * b - 4 * a * c; //?????
e = ( 0 - b )/( 2 * a );
cout << fixed << setprecision(5); //??????????????5?
if(d==0) //??????0???????
cout << "x1=x2=" << e << endl;
else //???????0????????
{
if(d>0) //??????0????????
{
f = sqrt ( d )/( 2 * a );
cout << "x1=" << e + f << ";" << "x2=" << e - f << endl;
}
else //??????0????????
{
f = sqrt ( -d )/( 2 * a );
cout << "x1=" << e << "+" << f << "i" << ";" << "x2=" << e << "-" << f << "i" << endl;
}
}
}
return 0;
} //?????
|
27
|
13,229 |
int main()
{
int i,n,r;
double a,b,c,x[2000],x1[2000],x2[2000],delta[2000];
i=1;
scanf("%d",&n);
while (i<=n)
{
scanf("%lf %lf %lf",&a,&b,&c);
delta[i]=b*b-4*a*c;
if (delta[i]>0)
{
x1[i]=(-b+sqrt(delta[i]))/(2*a);
x2[i]=(-b-sqrt(delta[i]))/(2*a);
}
else if (delta[i]==0)
{
x1[i]=x2[i]=(-b)/(2*a);
}
else if (delta[i]<0)
{
x[i]=-b/(2*a);
x1[i]=sqrt(-delta[i])/(2*a);
x2[i]=sqrt(-delta[i])/(2*a);
}
i=i+1;
}
for(r=1;r<=n;r=r+1)
{
if (delta[r]>0) printf("x1=%.5lf;x2=%.5lf\n",x1[r],x2[r]);
else if (delta[r]==0) printf("x1=x2=%.5lf\n",x1[r]);
else if (delta[r]<0)
{
if (x[r]==0) x[r]=-x[r];
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x[r],x1[r],x[r],x2[r]);
}
}
return 0;
}
|
27
|
13,230 |
int main()
{
int k;
double a , b , c , x1 , x2 , m ,n;
cin >> k ;
for(int i=1 ; i <= k ; i++)
{
cin >> a >> b >> c;
if(b*b-4*a*c == 0)
{
cout << fixed;
cout << setprecision(5) << "x1=x2=" << (-b)/(2*a) << endl;
}
else
if(b*b-4*a*c > 0)
{
x1 = (-b + sqrt(b * b - 4 * a * c)) / (2 * a);
x2 = (-b - sqrt(b * b - 4 * a * c)) / (2 * a);
cout << fixed;
cout << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
else
{
m = (-b) / (2 * a);
n = sqrt(-b * b + 4 * a * c) / (2 * a);
if(m != 0)
{
cout << fixed;
cout << setprecision(5) << "x1=" << m << "+" << n << "i" << ";" << "x2=" << m << -n << "i" << endl;
}
else
{
cout << fixed;
cout << setprecision(5) << "x1=" << "0.00000" << "+" << n << "i" << ";" << "x2=" << "0.00000" << -n << "i" << endl;
}
}
}
return 0;
}
|
27
|
13,231 |
int main()
{
double a,b,c,x1,x2,z;
int n,i;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if (b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (b*b-4*a*c<0)
{
if (b==0) x1=0;
else x1 = (-b )/(2*a);
z = sqrt(-b*b+4*a*c)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,z,x1,z);
}
else if (b*b-4*a*c==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
}
return 0;
}
|
27
|
13,232 |
int main()
{
double a,b,c;
int n;
cin>>n;
for(int i=1;i<=n;i++){
cin>>a>>b>>c;
double delta=b*b-4*a*c;
if(delta==0){cout<<"x1=x2=";//?????Delta
printf("%.5f",((-b/(2*a))));
cout<<endl;}
else if(delta>0){
cout<<"x1=";
printf("%.5f",((-b+sqrt(delta))/(2*a)));
cout<<";"<<"x2=";
printf("%.5f",((-b-sqrt(delta))/(2*a)));
cout<<endl;}
if(delta<0){
delta=-delta;
cout<<"x1=";
if(b==0){
printf("%.5f",(b/(2*a)));}
else {printf("%.5f",(-b/(2*a)));}
cout<<"+";printf("%.5f",(sqrt(delta)/(2*a)));
cout<<"i"<< ";x2=";
if(b==0){
printf("%.5f",(b/(2*a)));}
else {printf("%.5f",(-b/(2*a)));}
cout<<"-";
printf("%.5f",(sqrt(delta)/2/a));
cout<<"i"<< endl;
}} return 0;
}
|
27
|
13,233 |
int main()
{
int n,i;
double a,b,c,d,e;
scanf("%d\n",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
e=(-b/(2*a));
if(d>0)
{
printf("x1=%.5lf;x2=%.5lf\n",e+sqrt(d)/(2*a),e-sqrt(d)/(2*a));
}
else if(d==0)
{
printf("x1=x2=%.5lf\n",e);
}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,sqrt(-d)/(2*a),e,sqrt(-d)/(2*a));
}
}
return 0;
}
|
27
|
13,234 |
/*
* ?????????.cpp
*?????????
* Created on: 2012-10-12
* Author: ???
*/
int main()
{
int n,i;
float a,b,c;
double d,e,f,x1,x2; //????
cin>>n; //?????????
for(i=n;i>=1;i--) //??????
{
cin>>a>>b>>c; //???????
d=b*b-4*a*c; //?????
if(d>0) //??????
{
x1=(0-b+sqrt(d))/(2*a);
x2=(0-b-sqrt(d))/(2*a); //?????
cout<<fixed<<setprecision(5)<<"x1="<<x1<<';'<<"x2="<<x2<<endl;
}
if(d==0) //??????
{
x1=(0-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl; //x1??x2
}
if(d<0) //??????
{
e=(sqrt(-d))/(2*a);
f=(0-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<f<<"+"<<e<<"i"<<";"<<"x2="<<f<<-e<<"i"<<endl;
}
}
return 0;
} //????
|
27
|
13,235 |
void main()
{
int i,n;
scanf("%d/n",&n);
double x1,x2,a,b,c,x,y;
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf\n",&a,&b,&c);
x=(sqrt(b*b-4*a*c))/(2*a);
if (x>0)
{
x1=-b/(2*a)+x;
x2=-b/(2*a)-x;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (x==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
y=(sqrt(-b*b+4*a*c))/(2*a);
x1=-b/(2*a);
printf("x1=%.5lf",x1);
printf("+%.5lf",y);
printf("i;");
printf("x2=%.5lf",x1);
printf("-%.5lf",y);
printf("i\n");
}
}
}
|
27
|
13,236 |
int main()
{
double a[100],b[100],c[100],d[100],e[100],f[100];
int n,i;
double *aa,*bb,*cc,*dd,*ee,*ff;
scanf("%d",&n);
aa=a,bb=b,cc=c;
for(i=0;i<n;aa++,bb++,cc++,i++)
scanf("%lf %lf %lf",aa,bb,cc);
aa=a,bb=b,cc=c,dd=d,ee=e,ff=f;
for(i=0;i<n;aa++,bb++,cc++,dd++,ee++,ff++,i++)
{
(*dd)=(*bb)*(*bb)-4*(*aa)*(*cc);
if((*dd)>0)
{
(*ee)=((-(*bb))+sqrt(*dd))/(2*(*aa));
(*ff)=((-(*bb))-sqrt(*dd))/(2*(*aa));
printf("x1=%.5lf;x2=%.5lf\n",*ee,*ff);
}
else if((*dd)==0)
{
(*ee)=0-(*bb)/(2*(*aa));
printf("x1=x2=%.5lf\n",*ee);}
else if((*dd)<0)
{ (*ee)=((*bb)/(2*(*aa)));
(*ff)=(sqrt(0-(*dd)))/(2*(*aa));
printf("x1=-%.5lf+%.5lfi;x2=-%.5lf-%.5lfi\n",*ee,*ff,*ee,*ff);
}
}
}
|
27
|
13,237 |
int main(){
int n;
cin>>n;
for(int i=0;i<n;i++){
double a,b,c;
cin>>a>>b>>c;
double d=b*b-4*a*c;
if(abs(d)<1e-8)d=0;
double e=-b/2/a;
if(abs(e)<1e-8)e=0;
if(abs(d)<1e-8)printf("x1=x2=%.5f",e);
else if(d>0)printf("x1=%.5f;x2=%.5f",e+sqrt(d)/2/a,e-sqrt(d)/2/a);
else {
d=abs(d);
if(a>0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",e,sqrt(d)/2/a,e,sqrt(d)/2/a);
else printf("x1=%.5f-%.5fi;x2=%.5f+%.5fi",e,-sqrt(d)/2/a,e,-sqrt(d)/2/a);
}
cout<<endl;
}
return 0;
}
|
27
|
13,238 |
int main()
{
int i,n;
scanf("%d\n",&n);
float A[100][3];
for(i=0;i<n;i++)
scanf("%f%f%f\n",&A[i][0],&A[i][1],&A[i][2]);
for(i=0;i<n;i++)
{
if(A[i][1]*A[i][1]-4*A[i][0]*A[i][2]>0)
printf("x1=%.5f;x2=%.5f\n",(-A[i][1]+sqrt(A[i][1]*A[i][1]-4*A[i][0]*A[i][2]))/(2*A[i][0]),(-A[i][1]-sqrt(A[i][1]*A[i][1]-4*A[i][0]*A[i][2]))/(2*A[i][0]));
else if(A[i][1]*A[i][1]-4*A[i][0]*A[i][2]==0)
printf("x1=x2=%.5f\n",(-A[i][1])/(2*A[i][0]));
else if(A[i][1]*A[i][1]-4*A[i][0]*A[i][2]<0)
{if((-A[i][1])/(2*A[i][0])==0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(A[i][1])/(2*A[i][0]),(sqrt(-(A[i][1]*A[i][1]-4*A[i][0]*A[i][2])))/(2*A[i][0]),(A[i][1])/(2*A[i][0]),(sqrt(-(A[i][1]*A[i][1]-4*A[i][0]*A[i][2])))/(2*A[i][0]));
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-A[i][1])/(2*A[i][0]),(sqrt(-(A[i][1]*A[i][1]-4*A[i][0]*A[i][2])))/(2*A[i][0]),(-A[i][1])/(2*A[i][0]),(sqrt(-(A[i][1]*A[i][1]-4*A[i][0]*A[i][2])))/(2*A[i][0]));}
}
return 0;
}
|
27
|
13,239 |
int main()
{double a,b,c,d,e,f,x1,x2;
int n,t=0;
cin>>n;
for(t=0;t<n;t++)
{cin>>a>>b>>c;
d=b*b-4*a*c;
if(d>0)
{x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
else if(d==0)
{x1=(-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{e=sqrt(-d)/(2*a);
f=(-b)/(2*a);
if(f==0)
f=fabs(f);
cout<<fixed<<setprecision(5)<<"x1="<<f<<"+"<<e<<"i;x2="<<f<<"-"<<e<<"i"<<endl;}
}
return 0;}
|
27
|
13,240 |
int main()
{
int n,m;
double a,b,c,x1,x2,i;
cin>>n;
for(m=1;m<=n;m++)//?????
{ cin >>a>>b>>c;
if((b*b-4*a*c)>0)//???????
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1"<<"="<<x1<<";"<<"x2"<<"="<<x2<<endl;
}
if((b*b-4*a*c)==0)//???????
{
x1=x2=(-b) /(2*a);
cout<<fixed<<setprecision(5)<<"x1"<<"="<<"x2"<<"="<<x2<<endl;
}
if((b*b-4*a*c)<0)//???????
{
x1=x2=(-b) /(2*a);
i=fabs(sqrt(4*a*c-b*b)/(2*a));
if (x1>(-0.000001)&& x2<0.000001)x1=x2=0;
cout<<fixed<<setprecision(5)<<"x1"<<"="<<x1<<"+"<<i<<"i"<<";"<<"x2"<<"="<<x2<<"-"<<i<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,241 |
int main()
{
int n,i;
double a[100],b[100],c[100],x1,x2,y1;
cin>>n;
for(i=0;i<n;i++)
{
cin>>a[i]>>b[i]>>c[i];
if((b[i]*b[i]-4*a[i]*c[i])>0)
{
x1=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
cout<<"x1="<<fixed<<setprecision(5)<<x1<<";"<<"x2="<<x2<<endl;
}
else if((b[i]*b[i]-4*a[i]*c[i])==0)
{
x1=(-b[i]+0)/(2*a[i]);
x2=x1;
cout<<"x1=x2="<<fixed<<setprecision(5)<<x1<<endl;
}
else if((b[i]*b[i]-4*a[i]*c[i])<0)
{
if(b[i]==0)y1=0;
else
{
y1=(-b[i])/(2*a[i]);
}
x1=(sqrt(abs(b[i]*b[i]-4*a[i]*c[i])))/(2*a[i]);
cout<<"x1="<<fixed<<setprecision(5)<<y1<<"+"<<x1<<"i"<<";"<<"x2="<<y1<<"-"<<x1<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,242 |
/*
* equation.cpp
*
* Created on: 2013-10-23
* Author: Mac
*/
/*
* 9898989.cpp
*
* Created on: 2013-9-26
* Author: Mac
*/
int main()
{
int n;
double a,b,c,x1,x2,xr,xi;//define roots and real part and i part
cin>>n;
while (n--)
{
cin>>a>>b>>c;
if ((b*b-4*a*c)==0)
{
x1 = (-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else if
((b*b-4*a*c)<0)
{
xr = (-b)/(2*a);
if (fabs(xr)<(1e-6)) xr = 0;
xi = sqrt(4*a*c-b*b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<xr<<"+"<<xi<<"i;x2="<<xr<<"-"<<xi<<"i"<<endl;
}
else
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
if (fabs(x1)<(1e-6)) x1 = 0;
if (fabs(x2)<(1e-6)) x2 = 0;
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
}
return 0;
}
|
27
|
13,243 |
int main()
{
int n;
scanf("%d\n",&n);
int i;
i=1;
do
{ double a,b,c;
scanf("%lf%lf%lf\n",&a,&b,&c);
double x1,x2,disc,realpart,imagpart;
disc=b*b-4*a*c;
if(fabs(disc)<=1e-6)
printf("x1=x2=%.5f\n",-b/(2*a));
else if(disc>1e-6)
{
x1=(-b+sqrt(disc))/(2*a);
x2=(-b-sqrt(disc))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
if(b==0) printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,imagpart,b,imagpart);
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",realpart,imagpart,realpart,imagpart);
}
i++;
}
while(i<=n);
}
|
27
|
13,244 |
main()
{
double f;
int n,m;
scanf("%d",&n);
float a[20],b[20],c[20];
for(m=0;m<n;m++)
{
scanf("%f %f %f",&a[m],&b[m],&c[m]);
}
int i;
for(i=0;i<n;i++)
{
f=b[i]*b[i]-4*a[i]*c[i];
if(f>=0)
{
double p,q;
p= (-b[i]+ sqrt(f))/(2*a[i]);
q = (-b[i]- sqrt(f))/(2*a[i]);
if(p==q)
printf("x1=x2=%.5f\n",p);
else
printf("x1=%.5f;x2=%.5f\n",p,q);
}
else
{
double d,e;
d=sqrt(-f)/(2*a[i]);
e=0-b[i]/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,d,e,d);
}
}
}
|
27
|
13,245 |
int main()
{
int n,i;
double a,b,c,e,d;
scanf("%d\n",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
e=b*b-4*a*c;
d=(-b/(2*a));
if(e>0)
printf("x1=%.5lf;x2=%.5lf\n",d+sqrt(e)/(2*a),d-sqrt(e)/(2*a));
else if(e==0)
printf("x1=x2=%.5lf\n",d);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",d,sqrt(-e)/(2*a),d,sqrt(-e)/(2*a));
}
return 0;
}
|
27
|
13,246 |
int main()
{
int n,i,k;
double a,b,c,A,B;
double x1,x2,x;
scanf("%d",&n);
for (k=0;k<n;k++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if ((b*b-4*a*c)>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if ((b*b-4*a*c)==0)
{
x=-b/(2*a);
printf("x1=x2=%.5lf\n",x);
}
if ((b*b-4*a*c)<0)
{
if(b==0)
{ A=0.00000;
B =sqrt(4*a*c-(b*b))/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",A,B,A,B);
}
else
{
A =-b/(2*a);
B =sqrt(4*a*c-(b*b))/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",A,B,A,B);
}
}
}
return 0;
}
|
27
|
13,247 |
int main()
{
int n,i,k;
double s,t,m;
scanf("%d",&n);
double a[100];
for(i=0;i<3*n;i++)
scanf("%lf",&a[i]);
for(k=0;k<3*n;k++)
{
if(k%3==0)
{
m=a[k+1]*a[k+1]-4*a[k]*a[k+2];
if(m>0)
{
s=(-a[k+1]+sqrt(m))/(2*a[k]);
t=(-a[k+1]-sqrt(m))/(2*a[k]);
printf("x1=%.5lf;x2=%.5lf\n",s,t);
}
if(m==0)
{
s=(-a[k+1])/(2*a[k]);
printf("x1=x2=%.5lf\n",s);
}
if(m<0)
{
s=(-a[k+1])/(2*a[k]);
t=(sqrt(-m))/(2*a[k]);
if(s==0)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",t,t);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",s,t,s,t);
}
}
else continue;
}
return 0;
}
|
27
|
13,248 |
int main()
{
int n,j;
double a[20],b[20],c[20],x1[20],x2[20];
scanf("%d",&n);
for(j=0;j<=n-1;j++)
{
scanf("%lf%lf%lf",&a[j],&b[j],&c[j]);
}
for(j=0;j<=n-1;j++)
{
if(b[j]*b[j]-4*a[j]*c[j]>=0){
if(b[j]*b[j]-4*a[j]*c[j]>0){
x1[j]=(-b[j]+sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2[j]=(-b[j]-sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1[j],x2[j]);
}else {
x1[j]=x2[j]=-b[j]/(2*a[j]);
printf("x1=x2=%.5lf\n",x1[j]);
}
}
else {x1[j]=-b[j]/(2*a[j]);x2[j]=sqrt(4*a[j]*c[j]-b[j]*b[j])/(2*a[j]);if(-b[j]/(2*a[j])!=0){
printf("x1=%.5lf",x1[j]);printf("+");printf("%.5lf",x2[j]);printf("i;");
printf("x2=%.5lf",x1[j]);printf("-");printf("%.5lf",x2[j]);printf("i\n");}
else{printf("x1=%.5lf",-x1[j]);printf("+");printf("%.5lf",x2[j]);printf("i;");
printf("x2=%.5lf",-x1[j]);printf("-");printf("%.5lf",x2[j]);printf("i\n");}
}
}
return 0;
}
|
27
|
13,249 |
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c,disc,x1,x2,realpart,imagpart;
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
disc=b*b-4*a*c;
if(fabs(disc)<=1e-6)
{
x1=-b/(2*a);
x2=-b/(2*a);
printf("x1=x2=%7.5f\n",x1);
}
else
if(disc>1e-6)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%7.5f;x2=%7.5f\n",x1,x2);
}
else
{
realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
if(realpart==0)
printf("x1=0.00000+%7.5fi;x2=0.00000-%7.5fi\n",imagpart,imagpart);
else
printf("x1=%7.5f+%7.5fi;x2=%7.5f-%7.5fi\n",realpart,imagpart,realpart,imagpart);
}
}
return 0;
}
|
27
|
13,250 |
/*????
x1 = (-b + sqrt(b*b-4*a*c))/(2*a)
x2 = (-b - sqrt(b*b-4*a*c))/(2*a)
??????? ax2 + bx + c = 0 ?????a???0?
????
???????????n?
??n?????????a, b, c??????????????????ax2 + bx + c =0???
????
????n????????????
???????????x1=...;x2 = ...
????????????x1=x2=...
???????????x1=??+??i; x2=??-??i
???????????????5?????????????*/
int main()
{
double q,p;
int n,i;
cin>>n;
double a[n],b[n],c[n];
for( i=1;i<=n;i++)
cin>>a[i]>>b[i]>>c[i];
for(i=1;i<=n;i++)
{
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
p=-b[i]/(2*a[i]);
q=sqrt(b[i]*b[i]-4*a[i]*c[i])/(2*a[i]);
if(p==-0) p=0;
if(q==-0) q=0;
cout<<"x1="<<fixed<<setprecision(5)<<p+q<<";";
cout<<"x2="<<fixed<<setprecision(5)<<p-q<<endl;
}
if(b[i]*b[i]-4*a[i]*c[i]<0)
{
p=-b[i]/(2*a[i]);
q=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
if(p==-0) p=0;
if(q==-0) q=0;
cout<<"x1="<<fixed<<setprecision(5)<<p<<"+"<<q<<"i"<<";";
cout<<"x2="<<fixed<<setprecision(5)<<p<<"-"<<q<<"i"<<endl;
}
if(b[i]*b[i]-4*a[i]*c[i]==0)
{
p=-b[i]/(2*a[i]);
if(p==-0) p=0;
cout<<"x1=x2="<<fixed<<setprecision(5)<<p<<endl;;
}
}
return 0;
}
|
27
|
13,251 |
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c,d,e;
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if(b==0)
e=0;
else e=(-b)/(2*a);
if(d>0)
printf("x1=%.5lf;x2=%.5lf\n",e+sqrt(d)/(2*a),e-sqrt(d)/(2*a));
else if(d<0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",e,sqrt(-d)/(2*a),e,-sqrt(-d)/(2*a));
else printf("x1=x2=%.5lf\n",e);
}
return 0;
}
|
27
|
13,252 |
int main(int argc, char* argv[])
{
int n,i;
scanf("%d",&n);i=n;
double a[n],b[n],c[n];
double x1[n],x2[n];
for(;n>0;n--){
scanf("%lf %lf %lf",&a[n],&b[n],&c[n]);
if(b[n]*b[n]-4*a[n]*c[n]<0){
x1[n]=-b[n]/(2*a[n]);
x2[n]=sqrt(4*a[n]*c[n]-b[n]*b[n])/(2*a[n]);
}
else {
x1[n]=(-b[n]+sqrt(b[n]*b[n]-4*a[n]*c[n]))/(2*a[n]);
x2[n]=(-b[n]-sqrt(b[n]*b[n]-4*a[n]*c[n]))/(2*a[n]);
}
}
for(;i>0;i--){
if(b[i]*b[i]-4*a[i]*c[i]>0) printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
else if(x1[i]-x2[i]==0) printf("x1=x2=%.5lf\n",x1[i]);
else if(b[i]*b[i]-4*a[i]*c[i]<0) printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1[i],x2[i],x1[i],x2[i]);
}
return 0;
}
|
27
|
13,253 |
//********************************
//*????????? **
//*????? 1300012848 **
//*???2013.10.10 **
//********************************
int main()
{
int n;
double a,b,c,z;
cin >> n;
for(int i = 1; i <= n; i++)
{
cin >> a >> b >> c;
z = -b / (2 * a);
if (z == -0)
z = 0;
if(b * b - 4 * a * c > 0)
{
cout << "x1=";
printf("%.5f",(-b + sqrt(b * b - 4 * a * c))/(2 * a));
cout << ";x2=";
printf("%.5f",(-b - sqrt(b * b - 4 * a * c)) / (2 * a));
cout << endl;
}
if(b * b - 4 * a * c == 0)
{
cout << "x1=x2=";
printf("%.5f",z);
cout << endl;
}
if(b * b - 4 * a * c < 0)
{
cout << "x1=";
printf("%.5f",z);
cout << "+";
printf("%.5f",sqrt(4 * a * c - b * b)/(2 * a));
cout << "i;x2=";
printf("%.5f",z);
cout << "-";
printf("%.5f",sqrt(4 * a * c - b * b)/(2 * a));
cout << "i" << endl;
}
}
return 0;
}
|
27
|
13,254 |
int main()
{
int number;
float a, b, c;
double delta=0;
scanf("%d",&number);
while ( number -- )
{
scanf("%f %f %f", &a, &b, &c);
delta = b*b-4*a*c;
if ( delta > 0 )
{
double x1,x2;
x1 = (-b + sqrt(delta))/(2*a);
x2 = (-b - sqrt(delta))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
if ( delta == 0 )
{
double x = (-b)/(2*a);
printf("x1=x2=%.5f\n", x);
}
else
{
delta = -delta;if(b==0){double xfront=b/(2*a);
double xbehind = sqrt(delta)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", xfront, xbehind, xfront, xbehind);}else{ double xfront = (-b)/(2*a);double xbehind = sqrt(delta)/(2*a);printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", xfront, xbehind, xfront, xbehind);}
}
}
}
}
|
27
|
13,255 |
int main()
{
int n;
cin>>n;
double a,b,c,delta,x1,x2,r,i;
for(int p=1;p<=n;p++)
{
cin>>a>>b>>c;
delta=b*b-4*a*c;
if (delta>0)
{
x1=(-b+sqrt(delta))/(2*a);
x2=(-b-sqrt(delta))/(2*a);
cout<<"x1=";
printf("%.5f", x1);
cout<<";x2=";
printf("%.5f\n",x2);
cout<<endl;
}
else
{
if (delta==0)
{
x1=(-b)/(2*a);
cout<<"x1=x2=";
printf("%.5f", x1);
cout<<endl;
}
else
{
r=(-b)/(2*a);
delta=-delta;
i=(sqrt(delta))/(2*a);
if (r==0)
{
r=abs(r);
}
cout<<"x1=";
printf("%.5f",r);
cout<<"+";
printf("%.5f",i);
cout<<"i;x2=";
printf("%.5f",r);
cout<<"-";
printf("%.5f",i);
cout<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,256 |
int main(int argc, char* argv[])
{
int n,i;
double a,b,c,x1,x2,delt,xr,xc;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
delt=b*b-4*a*c;
if(delt>0)
{
x1 = (-b + sqrt(delt))/(2*a);
x2 = (-b - sqrt(delt))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(delt==0)
{
x1 = (-b + sqrt(delt))/(2*a);
x2 = (-b - sqrt(delt))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
xr=-b/(2*a);
xc=sqrt(-b*b+4*a*c)/(2*a);
if(b!=0)
{printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",xr,xc,xr,xc);}
else
{printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",xc,xc);}
}
}
return 0;
}
|
27
|
13,257 |
int main()
{
int n,ni;
cin>>n;
for(ni=1;ni<=n;ni=ni+1)
{
double a,b,c,x1,x2,t;
cin>>a>>b>>c;
t=(-b)/(2*a);
if(fabs(t) < 1e-9)
t= 0;
if (b*b-4*a*c>0)
{
cout<<"x1=" ;
printf("%.5f",(t + sqrt(b*b-4*a*c)/(2*a)));
cout<<";";
cout<<"x2=";
printf("%.5f",(t - sqrt(b*b-4*a*c)/(2*a)));
cout<<endl;
}
else if (b*b-4*a*c==0)
{
cout<<"x1=x2=";
printf("%.5f", t);
cout<<endl;
}
else
{
cout<<"x1=";
printf("%.5f", t);
cout<<"+";
printf("%.5f",(sqrt(4*a*c-b*b)/(2*a)));
cout<<"i;";
cout<<"x2=";
printf("%.5f",t);
cout<<"-";
printf("%.5f",(sqrt(4*a*c-b*b)/(2*a)));
cout<<'i'<<endl;
}
}
return 0;
}
|
27
|
13,258 |
void main()
{
int n;
scanf("%d",&n);
while (n--)
{
double a,b,c,x1,x2,g,h;
scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b*b-4*a*c==0)
{
x1 = (-b)/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else if(b*b-4*a*c<0)
{
g=(-b)/(2*a);
h=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",g,h,g,h);
}
}
}
|
27
|
13,259 |
int main()
{
int n,i;
double a,b,c,dt,p,q;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
dt=b*b-4*a*c;
if(dt==0)
{
p=-b/2/a;if(p==0)p=0;
printf("x1=x2=%.5lf\n",p);
}
else if(dt>0)
{
p=(-b+sqrt(dt))/2/a;q=(-b-sqrt(dt))/2/a;
printf("x1=%.5lf;x2=%.5lf\n",p,q);
}
else
{
p=-b/2/a;q=sqrt(-dt)/2/a;if(p==0)p=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
|
27
|
13,260 |
int main()
{
double ans[1001][3];
int i,n;
float dt,a,b,c;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
dt=b*b-4*a*c;
if(dt==0)
{
ans[i][2]=0;
ans[i][0]=(-b+sqrt(dt))/a/2;
}
else if(dt>0)
{
ans[i][2]=-1;
ans[i][0]=(-b+sqrt(dt))/a/2;
ans[i][1]=(-b-sqrt(dt))/a/2;
}
else
{
ans[i][2]=-2;
ans[i][0]=-b/a/2;
ans[i][1]=sqrt(-dt)/a/2;
}
}
for (i=1;i<=n;i++)
{
if (ans[i][2]==0)
{
cout<<fixed;
cout<<setprecision(5)<<endl<<"x1=x2="<<ans[i][0];
}
else if(ans[i][2]==-1)
{
cout<<fixed;
cout<<setprecision(5)<<endl<<"x1="<<ans[i][0]<<";"<<"x2="<<ans[i][1];
}
else
{
if(ans[i][0]!=0)
{
cout<<fixed;
cout<<setprecision(5)<<endl<<"x1="<<ans[i][0]<<"+"<<ans[i][1]<<"i"<<";"<<"x2="<<ans[i][0]<<"-"<<ans[i][1]<<"i";
}
else
{
cout<<fixed;
cout<<setprecision(5)<<endl<<"x1="<<"0.00000"<<"+"<<ans[i][1]<<"i"<<";"<<"x2="<<"0.00000"<<"-"<<ans[i][1]<<"i";
}
}
}
return 0;
}
|
27
|
13,261 |
int main ()
{
int n,i;
scanf("%d",&n);
double a[n],b[n],c[n],d[n],e[n],p,q;
for (i=0;i<n;i++)
{ scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);}
for (i=0;i<n;i++)
{ q=b[i]*b[i]-4*a[i]*c[i];
p=-b[i]/(2*a[i]);
if (fabs(q)<=1e-6)
{ d[i]= p;
printf("x1=x2=%.5f\n",d[i]);}
if ( q >1e-6)
{ d[i]=p+(sqrt(q))/(2*a[i]);
e[i]=p-(sqrt(q))/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",d[i],e[i]);}
if (q<-1e-6)
{ d[i]=p;
if (fabs(p)<1e-6) d[i]=0;
e[i]=sqrt(-q)/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d[i],e[i],d[i],e[i]); }
}
}
|
27
|
13,262 |
int main()
{
int n,i;
double a,b,c,m,x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
m=b*b-4*a*c;
if(m>0)
{
x1=(-b+sqrt(m))/(2*a);
x2=(-b-sqrt(m))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(m==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
x1=-b/(2*a);
x2=sqrt(-m)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
return 0;
}
|
27
|
13,263 |
void main()
{
int i,n;
float a[100],b[100],c[100];
double x1,x2,d;
scanf ("%d",&n);
for (i=0;i<=n-1;i++)
{
scanf("%f%f%f",&(a[i]),&(b[i]),&(c[i]));
}
for (i=0;i<=n-1;i++)
{
d=b[i]*b[i]-4*a[i]*c[i];
if (d>0)
{
x1=(-b[i])/(2*a[i])+sqrt(b[i]*b[i]-4*a[i]*c[i])/(2*a[i]);
x2=(-b[i])/(2*a[i])-sqrt(b[i]*b[i]-4*a[i]*c[i])/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(d==0)
{
x1=(-b[i])/(2*a[i]);
printf("x1=x2=%.5f\n",x1);
}
else
{
x1=-b[i]/(2*a[i]);
x2=sqrt(-d)/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13,264 |
int main()
{
int n,i;
double a,b,c,x1,x2,d,e;
scanf("%d",&n);
for (i=0;i<n;i++){
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if(d>0){
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(d==0){
x1=-b/2/a;
if(x1==-0) x1 = 0;
printf("x1=x2=%.5lf\n",x1);
}
else if(d<0){
x1=-b/2/a;
if(x1==-0) x1 = 0;
e=sqrt(-d)/2/a;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,e,x1,e);
}
}
return 0;
}
|
27
|
13,265 |
void main()
{ int n,i;
double a,b,c,d,e,x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{ scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c>0.0000000001)
{ d=(-b+sqrt(b*b-4*a*c))/(2*a);
e=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",d,e);
}
else if(b*b-4*a*c<=0.0000000001 && b*b-4*a*c>=-0.0000000001 )
{ d=(-b)/(2*a);
e=(-b)/(2*a);
printf("x1=x2=%.5lf\n",d);
}
else
{ d=-b/(2*a);
e=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",
d,e,d,e);
}
}
}
|
27
|
13,266 |
int main(int argc, char* argv[])
{
double x1,x2,a,b,c,s,q,w;
int n,j;
scanf("%d",&n);
for(j=1;j<=n;j++)
{scanf("%lf%lf%lf",&a,&b,&c);
s=b*b-4*a*c;
if(s>0)
{x1=(-b + sqrt(s))/(2*a);
x2=(-b - sqrt(s))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);}
else if(s==0)
{{if(b==0)
x1=x2=0;
else
x1=x2=-b/(2*a);}
printf("x1=x2=%.5lf\n",x1); }
else
{
q=-b/(2*a);
w=sqrt(-s)/(2*a);
{if(b==0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",q,w,q,w);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",q,w,q,w);}}
}
return 0;
}
|
27
|
13,267 |
int main()
{
int n;
cin >> n;
float formal[n][3];
for (int i = 0; i < n; i++)
cin >> formal[i][0] >> formal[i][1] >> formal[i][2];
double x1,x2,delta,unfi;
for (int i = 0; i < n; i++)
{
delta = formal[i][1] * formal[i][1] - (4 * formal[i][0] * formal[i][2]);
if (delta > 0)
{
x1 = (-formal[i][1] + sqrt(delta)) / (2 * formal[i][0]);
x2 = (-formal[i][1] - sqrt(delta)) / (2 * formal[i][0]);
if (x1 == -0)
x1 = 0;
else if (x2== -0)
x2 = 0;
cout<<fixed;
cout << "x1=" << setprecision(5) << x1 << ";x2=" << x2 << endl;
}
else if (delta == 0)
{
x1 = -formal[i][1] / (2 * formal[i][0]);
if (x1 == -0)
x1 = 0;
cout<<fixed;
cout << "x1=x2=" << setprecision(5) << x1<<endl;
}
else
{
unfi = abs(sqrt(-delta) / (2 * formal[i][0]));
x1 = -formal[i][1] / (2 * formal[i][0]);
if (x1 == -0)
x1 = 0;
cout << fixed;
cout << setprecision(5) << "x1=" << x1 << "+" << unfi << "i;x2="
<< x1 << "-" << unfi << "i" <<endl;
}
}
return 0;
}
|
27
|
13,268 |
int main(int argc, char* argv[])
{
int n,i;
double x1[11],x2[11],disc[11],real[11],imag[11];
float a[11],b[11],c[11];
scanf ("%d",&n);
for(;n>11;)
{
printf("Wrong input,please input again.\n");
scanf("%d",&n);
}
for(i=0;i<n;i++)
scanf("%f %f %f",&a[i],&b[i],&c[i]);
for(i=0;i<n;i++)
{
disc[i]=b[i]*b[i]-4*a[i]*c[i];
if (disc[i]>1e-6)
{
x1[i]=(-b[i]+sqrt(disc[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(disc[i]))/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x1[i],x2[i]);
}
else if (disc[i]<=1e-6&&disc[i]>=-1e-6)
{
x1[i]=-b[i]/(2*a[i]);
printf("x1=x2=%.5f\n",x1[i]);
}
else
{
real[i]=-b[i]/(2*a[i]);
imag[i]=sqrt(-disc[i])/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",real[i],imag[i],real[i],imag[i]);
}
}
return 0;
}
|
27
|
13,269 |
main()
{
int n,i;
float a,b,c;
double x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%f %f %f ",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1=(double )(0-b+sqrt(b*b-4*a*c))/(2*a);
x2=(double )(0-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(b*b-4*a*c==0)
{
x1=x2=(double )(0-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if(b*b-4*a*c<0)
{
x1=(double )(sqrt(4*a*c-b*b))/(2*a);
x2=(double )(0-b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x2,x1,x2,x1);
}
}
}
|
27
|
13,270 |
int main()
{
int e,i;
double a[50],b[50],c[50];
scanf("%d",&e);
for(i=0;i<e;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
}
double delta,m,n,x1,x2;
for (i=0;i<e;i++)
{
delta=b[i]*b[i]-4*a[i]*c[i];
m=-(b[i]/(2*a[i]));
n=sqrt(fabs(delta))/(a[i]*2);
if(a[i]!=0)
{
if(delta==0)
{
printf("x1=x2=%.5lf\n",m);
}
else if(delta>0)
{
x1=m+n;
x2=m-n;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
printf("x1=%.5lf+%.5lfi;",m,n);
printf("x2=%.5lf-%.5lfi\n",m,n);
}
}
else if (a[i]==0)
{
double g;
g=-c[i]/b[i];
printf("x1=x2=%.5lf",g);
}
}
return 0;
}
|
27
|
13,271 |
int main()
{
int n,k,j;
double num[100][100]={0},a,b,c,x1,x2,i;
scanf("%d",&n);
i=sqrt(-1);
for(k=0;k<=n-1;k++)
{
scanf("%lf %lf %lf",&num[k][0],&num[k][1],&num[k][2]);
a=num[k][0];
b=num[k][1];
c=num[k][2];
if((b*b-4*a*c)>=0)
{
num[k][3]= (-b + sqrt(b*b-4*a*c))/(2*a);
num[k][4]= (-b - sqrt(b*b-4*a*c))/(2*a);
}
else
{
if(b==0.00000)
{num[k][3]=0.00000;}
else
{
num[k][3]= (-b)/(2*a);
}
num[k][4]=sqrt(4*a*c-b*b)/(2*a);
num[k][5]=sqrt( 4*a*c-b*b)/(2*a);
}
//printf("\n");//
}
for(j=0;j<=n-1;j++)
{
k=j;
if(num[k][1]*num[k][1]-4*num[k][0]*num[k][2]>=0)
{
if(num[k][3]!=num[k][4])
{printf("x1=%.5lf;x2=%.5lf\n",num[k][3],num[k][4]);}
else {printf("x1=x2=%.5lf\n",num[k][3]);}
}
else {printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",num[k][3],num[k][4],num[k][3],num[k][5]);}
}
getchar();
getchar();
return 0;
}
|
27
|
13,272 |
int main()
{
int n;
scanf("%d",&n);
int i;
for(i=1;i<=n;i++)
{
double a,b,c;
scanf("%lf%lf%lf",&a,&b,&c);
double x1,x2;
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(b*b-4*a*c==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if(b*b-4*a*c<0)
{
double m,n;
m=-b/(2*a);
n=sqrt(-b*b+4*a*c)/(2*a);
if(m==-0)
m=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
}
return 0;
}
|
27
|
13,273 |
int main(){
int n;
double a,b,c,j,x1,x2,m;
cin>>n;
do
{n--;
cin>>a>>b>>c;
x1=(-b + sqrt(b*b-4*a*c))/(2*a) ;
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
m=(-b)/(2*a);
j=b*b-4*a*c ;
cout<<fixed<<setprecision(5);
if(x1<0.00001&&x1>-0.00001) x1=0;
if(x2<0.00001&&x2>-0.00001) x2=0;
if(j>0) cout<<"x1="<<x1<<";x2="<<x2<<endl;
else if(j==0) cout<<"x1=x2="<<x1<<endl;
else {if(m<0.00001&&m>-0.00001) m=0;
cout<<"x1="<<m<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i";
cout<<";x2="<<m<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;}
}while(n>=1);
return 0;
}
|
27
|
13,274 |
int main()
{
int i,j,n;
float a[100],b[100],c[100],d[100];
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f",&a[i]);
scanf("%f",&b[i]);
scanf("%f",&c[i]);
}
for(i=0;i<n;i++)
{
d[i]=b[i]*b[i]-4*a[i]*c[i];
if(d[i]==0)
printf("x1=x2=%.5f\n",(-b[i])/(2*a[i]));
if(d[i]>0&&c[i]==0)
printf("x1=0.00000;x2=%.5f\n", (-b[i]-sqrt(d[i]))/(2*a[i]));
if(d[i]>0&&c[i]!=0)
printf("x1=%.5f;x2=%.5f\n",(-b[i]+sqrt(d[i]))/(2*a[i]), (-b[i]-sqrt(d[i]))/(2*a[i]));
if(d[i]<0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b[i]/(2*a[i]),sqrt(-d[i])/(2*a[i]),-b[i]/(2*a[i]),sqrt(-d[i])/(2*a[i]));
}
return 0;
}
|
27
|
13,275 |
int main()
{
int i,n;
double a,b,c,x1,x2,disk,l[100],p[100],q[100],realpart,imagpart;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&l[i],&p[i],&q[i]);
}
for(i=0;i<n;i++)
{
a=l[i];
b=p[i];
c=q[i];
disk=b*b-4*a*c;
if(disk>0)
{
x1 = (-b + sqrt(disk))/(2*a);
x2 = (-b - sqrt(disk))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(disk==0)
{
x2 = (-b - sqrt(disk))/(2*a);
printf("x1=x2=%.5f\n",x2,x2);
}
else
{
realpart= (-b)/(2*a);
if(realpart==0) realpart=fabs(realpart);
imagpart= fabs(sqrt(-disk)/(2*a));
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",realpart,imagpart,realpart,imagpart);
}
}
return 0;
}
|
27
|
13,276 |
/*
* 004.cpp
*
* Created on: 2012-9-28
* Author: ???
* ??:???????????????
*/
int main(){
int n;
double a,b,c,delta,x1,x2,x;
cin >> n;
while(n--){
cin >> a >> b >> c;
delta=b*b-4*a*c;
if (delta>=0){ //??????
if (delta>0){
x1=(-b + sqrt(delta))/(2*a);
x2=(-b - sqrt(delta))/(2*a);
if (x1==0) x1=0; //????"-0"???
if (x2==0) x2=0;
printf("x1=%.5f;x2=%.5f\n",x1,x2); //?printf??????5???
} else {
x1=(-b)/(2*a);
if (x1==0) x1=0;
printf("x1=x2=%.5f\n", x1);
}
}else {
x1=(-b)/(2*a); //??
x=sqrt(-delta)/(2*a); //??
if (x1==0) x1=0;
if (x==0) x=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x,x1,x);
}
}
return 0;
}
|
27
|
13,277 |
main()
{
int n,i;
scanf("%d",&n);
double a,b,c,d;
for (i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if (d==0)
printf("x1=x2=%.5lf\n",-b/(2*a));
else
{ if (d>0)
if ((-b)/(2*a)<0.00001 && ((-b)/(2*a))>-0.00001 )
printf("x1=0.00000+%.5lf;x2=0.00000-%.5lf\n",sqrt(d)/(2*a),sqrt(d)/(2*a));
else
printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(d))/(2*a),(-b-sqrt(d))/(2*a));
else if ((-b)/(2*a)<0.00001&& (-b)/(2*a)>-0.00001 )
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",sqrt(-d)/(2*a),sqrt(-d)/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2*a),sqrt(-d)/(2*a),-b/(2*a),sqrt(-d)/(2*a));
}
}
}
|
27
|
13,278 |
//*****************************
//* ??? ??????? *
//* ??? 1100012820 *
//* ?? 20110915 *
//*****************************
int main()
{
int i, n; //????n?????i
double a, b, c, det; //????????????????;
cin>>n; //??????n
cout<<fixed<<setprecision(5);
for (i=1; i<=n; i++) //????????
{
cin>>a>>b>>c; //?????
det = b * b - 4 * a * c; //?????
if (det < 0) //???????0
{
if (a > 0) //??a??0
cout<<"x1="<<b / a / (-2) + 1 - 1
<<"+"<<sqrt(fabs(det))/ a / 2
<<"i;x2="<<-(b / a / 2) + 1 - 1
<<-sqrt(fabs(det))/ a / 2
<<"i"<<endl;
//???????
else //??a??0
cout<<"x1="<<(-b) / a / 2
<<"+"<<sqrt(fabs(det))/ a / 2
<<"i;x2="<<-(b / a / 2)
<<-sqrt(fabs(det))/ a / 2
<<"i"<<endl;
//???????
}
else if (det == 0) //???????0
cout<<"x1=x2="<<(-b) / a / 2<<endl;
//??????
else //????????0?
cout<<"x1="
<<(- b + sqrt(b * b - 4 * a * c)) / (2 * a)
<<";x2="
<<( - b - sqrt( b * b - 4 * a * c)) / (2 * a)
<<endl;
//???????
//????
} //????
return 0;
}
|
27
|
13,279 |
int main()
{
int n;
cin>>n;
while(n--)
{
float a,b,c;
cin>>a>>b>>c;
double delta=b*b-4*a*c;
cout<<fixed<<setprecision(5);
if(delta>0)
{
double x1=(-b+sqrt(delta))/(2*a);
double x2=(-b-sqrt(delta))/(2*a);
if(x1==-0.0) x1=0.0;
if(x2==-0.0) x2=0.0;
cout<<"x1="<<x1<<";x2="<<x2<<endl;
continue;
}
if(delta==0)
{
double x=-b/(2*a);
if(x==-0.0) x=0.0;
cout<<"x1=x2="<<x<<endl;
continue;
}
if(delta<0)
{
double re=-b/(2*a);
double im=sqrt(-delta)/(2*a);
if(re==-0.0) re=0.0;
cout<<"x1="<<re<<"+"<<im<<"i;x2="<<re<<"-"<<im<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,280 |
int main()
{
int n;
double d[20];/*????????*/
double e[20];
double f[20];
scanf("%d",&n);
int s,t;
double a,b,c,x1,x2,y,z;
for (s=1;s<=n;s++)
scanf("%lf %lf %lf",&d[s],&e[s],&f[s]);
for(t=1;t<=n;t++)
{
a=d[t];/*?????????*/
b=e[t];
c=f[t];
if(b*b-4*a*c>=0)
{
if(b*b-4*a*c>0)
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
x1=(-b)/(2*a);
x2=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
}
else
{
y=(-b)/(2*a);
z=sqrt(4*a*c-b*b)/(2*a);
if (fabs(y)<0.00001) y=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",y,z,y,z);
}
}
getchar();
getchar();
return 0;
}
|
27
|
13,281 |
main()
{
int n,i,j;
double s,c,d,e;
float t;
scanf("%d",&n);
float a[n][3];
for(i=0;i<=(n-1);i++)
{
for(j=0;j<=2;j++)
{
scanf("%f",&t);
a[i][j]=t;
}
}
for(i=0;i<=(n-1);i++)
{
s=a[i][1]*a[i][1]-4*a[i][0]*a[i][2];
if(s>1e-6)
{
c = (-a[i][1] + sqrt(s))/(2*a[i][0]);
d = (-a[i][1] - sqrt(s))/(2*a[i][0]);
if(fabs(c)<1e-6)c=0.00000;
if(fabs(d)<1e-6)c=0.00000;
printf("x1=%0.5f;x2=%0.5f\n",c,d);
}
else if(fabs(s)<1e-6)
{
c=-a[i][1]/(2*a[i][0]);
if(fabs(c)<1e-6)c=0.00000;
printf("x1=x2=%.5f\n",c);
}
else
{
c=sqrt(-s)/(2*a[i][0]);
if(fabs(a[i][1])>1e-6)d=-a[i][1]/(2*a[i][0]);
else d=0.00000;
if(c<1e-6)printf("x1=%.5f%.5fi;x2=%.5f+%.5fi\n",d,c,d,-c);
else printf("x1=%.5f+%.5fi;x2=%.5f%.5fi\n",d,c,d,-c);
}
}
getchar();
getchar();
getchar();
getchar();
}
|
27
|
13,282 |
int main()
{
int n; //?? n ?????
double a, b, c, delta, x1, x2; //?? a,b,c,delta,x1,x2 ?????????
cin >> n; //??n
cout << fixed;
for (int i = 1; i <= n; i++)
{
cin >> a >> b >> c; //??a,b,c
delta = b * b - 4 * a * c;
if (delta > 0) //??2??
{
x1 = (-b + sqrt(delta)) / (2 * a); //??x1
x2 = (-b - sqrt(delta)) / (2 * a); //??x2
if (x1 == 0)
{
x1 = 0;
}
if (x2 == 0)
{
x2 = 0;
}
cout << setprecision(5) << "x1=" << x1 << ";x2=" << x2 << endl; //??x1,x2 ??????????
}
else if (delta == 0) //??2????
{
x1 = -b / (2 * a); //??x
if (x1 == 0)
{
x1 = 0;
}
cout << setprecision(5) << "x1=x2=" << x1 <<endl; //??x ??????????
}
else
{
x1 = -b / (2 * a); //????
if (x1 == 0)
{
x1 = 0;
}
x2 = sqrt(-delta) / (2 * a); //???????
cout << setprecision(5) << "x1=" << x1 << "+" << x2 << "i" <<
";x2=" << x1 << "-" << x2 << "i" << endl; //???? ??????????
}
}
return 0;
}
|
27
|
13,283 |
int main()
{
int n,i;
double a,b,c,x,y;
cin>>n;
for(i=0;i<n;i++)
{
cin>>a>>b>>c;
if(b*b-4*a*c>0)
{
x=(-b+sqrt(b*b-4*a*c))/(2*a);
y=(-b-sqrt(b*b-4*a*c))/(2*a);
cout<<"x1=";
printf("%.5lf",x);
cout<<";x2=";
printf("%.5lf\n",y);
}
else if(b*b-4*a*c==0)
{
x=(-b+sqrt(b*b-4*a*c))/(2*a);
cout<<"x1=x2=";
printf("%.5lf\n",x);
}
else
{
x=(sqrt(-b*b+4*a*c))/(2*a);
if(b!=0)
y=(-b)/(2*a);
else y=0;
cout<<"x1=";
printf("%.5lf",y);
cout<<"+";
printf("%.5lf",x);
cout<<"i;x2=";
printf("%.5lf",y);
cout<<"-";
printf("%.5lf",x);
cout<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,284 |
//============================================================================
// Name : fangcheng.cpp
// Author : 1234
// Version :
// Copyright : Your copyright notice
// Description :
//============================================================================
int main()
{
int n;
double a,b,c,d,x1,x2;
cin>>n;
for(;n>0;n--)
{
cin>>a>>b>>c;//??n??
d=b*b-4*a*c;
if(d>0)
{
x1=(-b+sqrt(d))/(2*a);//????????x1,x2
x2=(-b-sqrt(d))/(2*a);//
if(x1==-0)x1=0;
cout<<"x1=";
cout<<fixed<<setprecision(5)<<x1;
if(x2==-0)x2=0;
cout<<";x2=";
cout<<fixed<<setprecision(5)<<x2<<"\n";
}
else if(d==0)
{
cout<<"x1=x2=";
if(b==0)cout<<0.00000;
cout<<fixed<<setprecision(5)<<(-b/(2*a))<<"\n";
}
else
{x1=-1*b/(2*a);//??????
if(x1==-0) x1=0;
x2=sqrt(-d)/(2*a);//??????
cout<<"x1=";
cout<<fixed<<setprecision(5)<<x1;
cout<<"+";
cout<<fixed<<setprecision(5)<<x2;
cout<<"i"<<';';
cout<<"x2=";
cout<<fixed<<setprecision(5)<<x1;
cout<<"-";
cout<<fixed<<setprecision(5)<<x2;
cout<<"i"<<"\n";
}
}
}
|
27
|
13,285 |
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c;
double x1,x2;
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>0.0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(b*b-4*a*c<0.0)
{
if(b!=0)
{
x1=-b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
if(sqrt(4*a*c-b*b)/(2*a)>0)
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
if(sqrt(4*a*c-b*b)/(2*a)<0)
{
printf("x1=%.5lf%.5lfi;x2=%.5lf+%.5lfi\n",x1,x2,x1,-x2);
}
}
else if(b==0)
{
x1=-b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
if(sqrt(4*a*c-b*b)/(2*a)>0)
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-x1,x2,-x1,x2);
}
if(sqrt(4*a*c-b*b)/(2*a)<0)
{
printf("x1=%.5lf%.5lfi;x2=%.5lf+%.5lfi\n",-x1,x2,-x1,-x2);
}
}
}
else
{
x1=x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
}
return 0;
}
|
27
|
13,286 |
void main()
{
int i,n;
double a,b,c;
double d,x1,x2;
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if (d>0)
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if (d==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if (d<0)
{
double t;
t=sqrt(-d);
printf("x1=-%.5lf+%.5lfi;x2=-%.5lf-%.5lfi\n",b/(2*a),t/(2*a),b/(2*a),t/(2*a));
}
}
}
|
27
|
13,287 |
/*
* ????dz.cpp
* ??????
* ????:2012-10-13
* ????????????
*/
int main(){
float a=0,b=0,c=0; //????a,b,c
int i,n; //????n
double d,e; //????d,e
cin>>n; //?????????n
for(i=1;i<=n;i=i+1) //?for???n???
{
cin>>a>>b>>c; //????a,b,c
if(b*b-4*a*c>0) //????????
{
d=(-b + sqrt(b*b-4*a*c))/(2*a); //??x1??
e=(-b - sqrt(b*b-4*a*c))/(2*a); //??x2??
if(d>-0.00001) //???????????5????-0????????
d=fabs(d);
if(e>-0.00001) //???????????5????-0????????
e=fabs(e);
cout<<"x1="<<fixed<<setprecision(5)<<d //???x1=...;x2=...(???????5?)
<<";x2="<<fixed<<setprecision(5)<<e<<endl;
}
else if(b*b-4*a*c==0) //???????
{
d=-b/(2*a); //?????x1,x2??
if(d>-0.00001) //???????????5????-0????????
d=fabs(d);
cout<<"x1=x2="<<fixed<<setprecision(5)<<d<<endl; //???x1=x2=...(???????5?)
}
else //????????
{
d=-b/(2*a); //????x1,x2?????
if(d>-0.00001) //???????????5????-0????????
d=fabs(d);
cout<<"x1="<<fixed<<setprecision(5)<<d<<"+" //???x1=??+??i;x2=??-??i
<<fixed<<setprecision(5)<<sqrt(-b*b+4*a*c)/(2*a)<<"i"
<<";x2="<<fixed<<setprecision(5)<<d<<"-"
<<fixed<<setprecision(5)<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
}
return 0; //?????
}
|
27
|
13,288 |
int main()
{
int n,i;
double a,b,c,x1,x2,G,y;
scanf("%d\n",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf\n",&a,&b,&c);
G=b*b-4*a*c;
if (G>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
if(x1==0){
x1=0-x1;
}
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
if(x2==0){
x2=0-x2;
}
if (x1==x2) printf("x1=x2=%.5lf\n",x1,x2);
else printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
x1=(-b)/(2*a);
if(x1==0){
x1=0-x1;
}
y=(-sqrt(-b*b+4*a*c))/(2*a);
if (y==0) printf("x1=x2=%.5lf\n",x1,x1);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,-y,x1,-y);
}
}
return 0;
}
|
27
|
13,289 |
main()
{ int n,k;
double x1,x2,a,b,c,d,e;
scanf("%d",&n);
k=1;
do{scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if(d>=0)
{if(d>0)
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
k=k+1;}
else
{
printf("x1=x2=%.5f\n",-b/(2*a));
k=k+1;}
}
else
{if(b==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",sqrt(-b*b+4*a*c)/(2*a),sqrt(-b*b+4*a*c)/(2*a));
else
{ e=(-b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,sqrt(-b*b+4*a*c)/(2*a),e,sqrt(-b*b+4*a*c)/(2*a));
}k=k+1;}
}while(k<=n) ;
}
|
27
|
13,290 |
main()
{
int n,i;
double a,b,c,H,p,q;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
p=-b/(2*a); H=b*b-4*a*c;
if(H>1e-6) {q=sqrt(H)/(2*a);printf("x1=%.5f;x2=%.5f\n",p+q,p-q);}
else{ if(fabs(H)<=1e-6) {printf("x1=x2=%.5f\n",p);}
else{ q=sqrt(-H)/(2*a); if(p!=0) printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
else printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",q,q);
}}
}
}
|
27
|
13,291 |
int main(int argc, char* argv[])
{
int n,i;
float a[100],b[100],c[100];
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%f%f%f",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++){
if(a[i]!=0){
double dt,m,n,x1,x2;
dt=b[i]*b[i]-4*a[i]*c[i];
m=-(b[i]/(2*a[i]));
n=sqrt(fabs(dt))/(2*a[i]);
if(dt==0){
printf("x1=x2=%.5f\n",m);
}
else if(dt>0){
x1=m+n;
x2=m-n;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else{
printf("x1=%.5f+%.5fi;",m,n);
printf("x2=%.5f-%.5fi\n",m,n);
}
}
}
return 0;
}
|
27
|
13,292 |
int main ()
{
int n;
cin >>n;
for (int i=1;i<=n;i++)
{
double a,b,c,d,e,x,y;
cin >>a>>b>>c;
d=b*b-4*a*c;
e=-b/2/a;
if (e==-0)
e=0;
if (d>0)
{
x=e+sqrt(d)/2/a;
y=e-sqrt(d)/2/a;
cout <<fixed<<setprecision(5)<<"x1="<<x<<";x2="<<y<<endl;
}
if (d==0)
{
cout <<fixed<<setprecision(5)<<"x1=x2="<<e<<endl;
}
if (d<0)
{
x=sqrt(-d)/2/a;
cout <<fixed<<setprecision(5)<<"x1="<<e<<"+"<<x<<"i;x2="<<e<<"-"<<x<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,293 |
int main(int argc, char* argv[])
{
int i;
int n;
double e,f;
double a,b,c;
double x1,x2;
scanf("%d",&n);
for(i=1;i<n+1;i++){
scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c>0){
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b*b-4*a*c==0){
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else if(b*b-4*a*c<0){
if(b==0){
e=0;
f=(sqrt(4*a*c-b*b))/(2*a);
}
else{
e=-b/(2*a);
f=(sqrt(4*a*c-b*b))/(2*a);
}
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
return 0;
}
|
27
|
13,294 |
int main()
{
int n;
float a,b,c,d,j,k;
double x1,x2;
char i;
cin>>n;
d=1;
i='i';
for(d=1;d<=n;d=d+1)
{
cin>>a>>b>>c;
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<fixed<<setprecision(5)<<";x2="<<x2<<endl;
}
if(b*b-4*a*c==0)
{
if(b==0)
{
x1=(b + sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
}
if(b*b-4*a*c<0)
{
if(b==0)
{
j=0;
k=sqrt(4*a*c-b*b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<j<<"+"<<fixed<<setprecision(5)<<k<<i<<";x2="<<fixed<<setprecision(5)<<j<<"-"<<fixed<<setprecision(5)<<k<<i<<endl;
}
else
{
j=-b/(2*a);
k=sqrt(4*a*c-b*b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<j<<"+"<<fixed<<setprecision(5)<<k<<i<<";x2="<<fixed<<setprecision(5)<<j<<"-"<<fixed<<setprecision(5)<<k<<i<<endl;
}
}
}
return 0;
}
|
27
|
13,295 |
main()
{
int n,i;
double a[100]={0},b[100]={0},c[100]={0},d,e,f;
scanf("%d",&n);
for (i=1;i<=n;i++)
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
// printf("%f %f %f",a[1],b[1],c[1]);
for (i=1;i<=n;i++)
{
d=b[i]*b[i]-4*a[i]*c[i];
e=-b[i]/(2*a[i]);
{if ((e<0.000001)&&(e>-0.000001))
e=0;}
if (d>0.000001)
printf("x1=%.5f;x2=%.5f\n",(-b[i]+sqrt(d))/(2*a[i]),(-b[i]-sqrt(d))/(2*a[i]));
else if (d<-0.000001)
{
f=sqrt(-d)/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
else
printf("x1=x2=%.5f\n",e);
}
}
|
27
|
13,296 |
int main()
{
int n,j;
double a[100],b[100],c[100],x1,x2,t;
double u,v;
scanf("%d",&n);
for(j=0;j<n;j++){
scanf("%lf%lf%lf",&a[j],&b[j],&c[j]);
}
for(j=0;j<n;j++){
t=b[j]*b[j]-4*a[j]*c[j];
if(t>0){
x1=(-b[j] + sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2=(-b[j] - sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(t==0){
x1=(-b[j] + sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2=(-b[j] - sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=x2=%.5lf\n",x1);
}
if(t<0){
u=-b[j]/(2*a[j]);
v=sqrt(-(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",u,v,u,v);
}
}
return 0;
}
|
27
|
13,297 |
int main()
{
int n,i;
double a[100], b[100], c[100], x1[100], x2[100], under[100], real[100],unreal[100];
scanf("%d", &n);
for (i=0; i<n; i++)
{
scanf("%lf %lf %lf", &a[i], &b[i], &c[i]);
under[i]=b[i]*b[i]-4*a[i]*c[i];
if (under[i]>0)
{
x1[i]=(0-b[i]+sqrt(under[i]))/(2*a[i]);
x2[i]=(0-b[i]-sqrt(under[i]))/(2*a[i]);
}
if (under[i]==0)
{
x1[i]=x2[i]=(-b[i]/(2*a[i]));
}
if (under[i]<0)
{
real[i]=(-b[i]/(2*a[i]));
unreal[i]=sqrt(-under[i])/(2*a[i]);
}
}
for(i=0; i<n; i++)
{
if(under[i]>0)
printf("x1=%.5lf;x2=%.5lf\n", x1[i], x2[i]);
if(under[i]==0)
printf("x1=x2=%.5lf\n", x1[i]);
if(under[i]<0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", real[i], unreal[i], real[i], unreal[i]);
}
return 0;
}
|
27
|
13,298 |
int main()
{
int n,j;
double a[100],b[100],c[100],p,q,u,x1,x2;
char r,s,t;
r='i';
s='+';
t='-';
scanf("%d",&n);
for(j=0;j<n;j++){
scanf("%lf %lf %lf",&a[j],&b[j],&c[j]);
p=(-b[j])/(2*a[j]);
q=b[j]*b[j]-4*a[j]*c[j];
if (p!=0)
{
if (q>0)
{x1=p+sqrt(q)/(2*a[j]);
x2=p-sqrt(q)/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2); }
else if (q<0){
u=sqrt(-q)/(2*a[j]);
printf("x1=%.5lf%c%.5lf%c;x2=%.5lf%c%.5lf%c\n",p,s,u,r,p,t,u,r);}
else
printf("x1=x2=%.5lf\n",p);
}
else
{p=(b[j])/(2*a[j]);
if (q>0)
{x1=p+sqrt(q)/(2*a[j]);
x2=p-sqrt(q)/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2); }
else if (q<0){
u=sqrt(-q)/(2*a[j]);
printf("x1=%.5lf%c%.5lf%c;x2=%.5lf%c%.5lf%c\n",p,s,u,r,p,t,u,r);}
else
printf("x1=x2=%.5lf\n",p);
}
}
}
|
27
|
13,299 |
int main()
{
int n=0,i=0;
double a=0,b=0,c=0,x1=0,x2=0,k=0,e=0,f=0;
cin>>n;
for(i=1;i<=n;i=i+1)
{
cin>>a>>b>>c;
k=b*b-4*a*c;
if(k>0)
{
x1=(-b+sqrt(k))/(2*a);
x2=(-b-sqrt(k))/(2*a);
cout<<setprecision(5)<<fixed<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
else if(k==0)
{
x1=(-b)/(2*a);
cout<<setprecision(5)<<fixed<<"x1=x2="<<x1<<endl;
}
else
{
e=(-b)/(2*a);
f=(sqrt(-k))/(2*a);
if(e==0)
{
cout<<setprecision(5)<<fixed<<"x1=0.00000"<<"+"<<f<<"i"
<<";"<<"x2=0.00000"<<"-"<<f<<"i"<<endl;
}
else
{
cout<<setprecision(5)<<fixed<<"x1="<<e<<"+"<<f<<"i"
<<";"<<"x2="<<e<<"-"<<f<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
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