输出程序运行结果。
#include
main()
   {
     enum     week{Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday};
      enum week day;
      int x;
      printf("please input a num:");
      scanf("%d",&x);
      day=(enum week)x;
      printf("Today is :");
      switch(day)
      {
        case Sunday:printf("Sunday");break;
        case Monday: printf("Monday");break;
        case Tuesday: printf("Tuesday");break;
        case Wednesday: printf("Wednesday");break;
        case Thursday: printf("Thursday");break;
        case Friday: printf("Friday");break;
        case Saturday: printf("Saturday");break;
        }
}