/*  HELLO.C -- Hello, world */

#include "stdio.h"
#include "conio.h"

main()
{
    float a,b,r,x1,x2,y1,y2,t1;
    printf("Enter Three Numbers:");
    scanf("%f%f%f",&a,&b,&r);
    t1=4*(a*a*r*r+r*r-b*b);
    if(t1<0)
        if(t1=0)
             if (t1>0)
             printf("x1=%f, y1=%f, x2=%f, y2=%f\n",x1=(-2*a*b-t1)/(2*(a*a+1)),y1=a*x1+b,x2=(-2*a*b+t1)/(2*(a*a+1)),y2=a*x2+b);
        else printf("x1=%f, y1=%f\n",x1=-2*a*b/(2*(a*a+1)),y1=a*x1+b);
    else printf("no solution\n");

    getch();
}

编译是成功的,但在dos下输入数字后还是输不出结果!

没有

逻辑哪里有问题?谢谢!

还是不行,再麻烦那位版主看看

  printf("x1=%f, y1=%f\n",x1=-2*a*b/(2*(a*a+1)),y1=a*x1+b);这个是不是有问题?

解决了,谢