#include<stdio.h>
main()
{
   char x;
   scanf（"%c",&x）;
   swith(x)
    {
      case N:   printf("睡觉去了！"); break;
      case Y:   printf("游泳去了！"); break;
      default：  printf("什么也不要干！");break;
    }

default 打错了

回十九楼
=应该改为==

#include"stdio.h"
main()
{char y,n,d;
 scanf("%c",&d);
 printf("Is it hot today?\n ");
 if(d==y)
 printf("I will eat ice!");
 else if(d==n)
 printf("I will go swimming1");
 else(d!=y&&d!=n)
 printf("Then i think i will do nothing about this!");
}
 

  }

感觉好玩就写了个条件嵌套的：
经过gcc测试了，不知道你是否满意;
#include <stdio.h>
int main(void)
{
        char m;
        printf("Input a character: \n");
        scanf("%c",&m);
        printf("%s",m == 'N' ? "睡觉" : m == 'Y' ? "去游泳" : "休息");
}

我的一运行就提示应用程序错误，怎么弄得