double fun1(double a,double b,double c)
{
double a,b,c,disc;
printf("有两个相同的实数根:%f",-b/(2*a));
return 0;
}
double fun2(double a,double b,double c)
{
double a,b,c,disc,x1,x2;
x1=(-b+sqrt(disc)/(2*a));
x2=(-b-sqrt(disc)/(2*a));
printf("有两个不同的实数根:%f,%f", x1,x2);
return 0;
}
double fun3(double a,double b,double c)
{
double a,b,c,disc,realpart,imagpart;
realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
printf("两个复根为:\n");
printf("%f+%fi\n",realpart,imagpart);
printf("%f-%fi\n",realpart,imagpart);
return 0;
}
#include<stdio.h>
#include<math.h>
int main()
{
double a,b,c,disc,x1,x2,realpart,imagpart;
scanf("%lf,%lf5lf",&a,&b,&c);
disc=b*b-a*a*c;
if(disc==0)
double fun1(double a,double b,double c);
if(disc>0)
double fun2(double a,double b,double c);
if(disc<0)
double fun2(double a,double b,double c);
return 0;
}
我这个是不是错的很离谱啊,求指教啊~~~