Question

帮我看看这个switch的问题，简单算法，老是error

#include<stdio.h>
void main(void)
{
float x,y;
char ch;
printf("Please input x, y and charcter.\n");
scanf("%f,%c,%f",&x,&ch,&y);
switch (ch)
{
case '+':printf("%f+%f=%f\n",x,y,x+y);break;
case '-':printf("%f-%f=%f\n",x,y,x-y);break;
case '*':printf("%f*%f=%f\n",x,y,x*y);break;
case '/':
if (y!=0.0)
printf("%f/%f=%f\n",x,y,x/y);
else
printf("error!\n");break;
default:
printf("error!\n");break;
}
}

Answer 1

没有问题；
输入的时候要注意意数字分隔不能少了“，”号

Answer 2

%f换成%lf试下