顶  拿分

前面的程序好像不对

我自己来补充吧：#include<stdio.h>
#include<string.h>
int   main ()
  {
      int a,b,s;
      char c;
        printf("请输入表达式\n");
        if(scanf("%d%c%d",&a,&c,&b)==3)
        {
               
            if(c=='+') //加法
            {
                s=a+b;
                printf("%d\n",s);
            }
            else if(c=='-')//减法
            {
                s=a-b;
                printf("%d\n",s);
            }
            else if(c== '*')
            {
                s=a*b;
                printf("%d\n",s);
            }
            else if(c=='/')
            {       s=a/b
                printf("%.2f\n",a/(float)b);
            
            }
            else if(c=='%')
            {    s=a%b        
                printf("%d\n",a%b);
            }
            
        }
   
        
    }

我也跟你一样


#include <stdio.h>
void main()
{
  int a,b;
  scanf("%d,%d",&a,&b);
  if(a>=b)
      printf("%d,%d\n",a,b);
  else
      printf("%d,%d\n",b,a);
}
这个都弄不出来为什么？求大神