输入数字1-7时对应星期几

Question

#include <stdio.h>
 int main()
 {
     char *GetDay(int nWeekDay)
     {
         char *p;
         switch (nWeekDay)
         {
         case 1: p = "Monday"; break;
         case 2: p = "Tuesday"; break;
         case 3: p = "Wednesday"; break;
         case 4: p = "Thursday"; break;
         case 5: p = "Friday"; break;
         case 6: p = "Saturday"; break;
         case 7: p = "Sunday"; break;
         default: p = "Wrong"; break; 
         }
         return *p;
     }
     return 0;
 }

为什么运行后会出现这个啊。

-

Answer 1

你这是把函数写在main里面
然后你哪里输入了？
哪里输出了？

    int nWeekDay=0;
    scanf("%d", &nWeekDay);
    string p;
    switch (nWeekDay)
    {
    case 1: p = "Monday"; break;
    case 2: p = "Tuesday"; break;
    case 3: p = "Wednesday"; break;
    case 4: p = "Thursday"; break;
    case 5: p = "Friday"; break;
    case 6: p = "Saturday"; break;
    case 7: p = "Sunday"; break;
    default: p = "Wrong"; break;
    }
    cout << p;
    return 0;