#include<stdio.h>
int main()
{
int day = 0;
scanf("%d\n",&day);
switch(day)
{ case 1:
printf("星期一");
case 2:
printf("星期二");
case 3:
printf("星期三");
case 4:
printf("星期四");
case 5:
printf("星期五");
case 6:
printf("星期六");
case 7:
printf("星期天");
}
return 0;
}
知道\n是换行,但求问为何换行后数据要输入两次才会出结果