#include <stdio.h>
#include <math.h>
void main()
{
float a,b,c,disc,x1,x2,r,p;
scanf("%f,%f,%f",&a,&b,&c);
if(a==0)
    if(b==0)
    printf("Input error!\n");
    else printf("x=%f\n",-c/b);
else{ disc=b*b-4*a*c;
        if(disc==0)
         printf("x1=x2=%f\n",-b/(2*a));
          else if(disc>0)
               {x1=(-b+sqrt(disc))/(2*a);
                x2=(-b-sqrt(disc))/(2*a);
                printf("x1=%f\nx2=%f\n",x1,x2);}
               else
               {r=-b/(2*a);
                p=sqrt(-disc)/(2*a);
                printf("x1=%f+%fi\n",r,p);
                printf("x2=%f-%fi\n",r,p);}}}
哪里错了？？？救救我吧

恩。我知道了，谢谢你

运行结果不对。。输入0 0 0，应该是Input error..而运行结果是-1

恩，谢啦

我用的visul c++6.0结果不对啊

是结果啊。。x1=...
x2=...