判断今天是一周的第几天

 1 #include<stdio.h>
 2 void judge(int days);
 3 int main()
 4 {
 5     int days;
 6     printf("请输入今天是一周的第几天:
");
 7     scanf("%d",&days);
 8     judge(days);
 9     getchar();
10     getchar();
11     return 0;
12 }
13 void judge(int days)
14 {
15     switch(days)
16         {
17             case 1:printf("周一");break;
18             case 2:printf("周二");break;
19             case 3:printf("周三");break;
20             case 4:printf("周四");break;
21             case 5:printf("周五");break;
22             case 6:printf("周六");break;
23             case 7:printf("周日");break;
24             default:printf("输入错误,请重新输入：");
25                 scanf("%d",&days);judge(days);break;
26         }
27 
28 }