求方程的根

``c
//注意:代码模板中的代码将会被复制到任何新创建的文件中，编辑代码模板中的代码，让他帮你自动增加固定代码吧
#include <stdio.h>
#include<math.h>
int main()
{double a,b,c,disc,x1,x2,realpart,imagpart;
scanf("%lf,%lf,%lf",&a,&b,&c);
printf(“这个方程的根”);
if(fabs(a)<=1e-6)
printf(“is not a quadratic\n”);
else
{disc=bb-4ac;
if(fabs(disc)<=1e-6)
printf(“has two equal roots：%8.4f\n”,-b/(2a));
else
if(disc>1e-6)
{
x1=(-b+sqrt(disc))/(2a);
x2=(-b-sqrt(disc))/(2a);
printf(“has distinct real roots:%7.1f and %7.1f\n”,x1,x2);
}
else
{
realpart=-b/(2a);
imagpart=sqrt(-disc)/(2a);
printf(“has complex roots:\n”);
printf("%7.1f+%7.1fi\n",realpart,imagpart);
printf("%7.1f-%7.1fi\n",realpart,imagpart);

}
}
return 0;
}