C语言之选择分支结构的应用

#include <stdio.h>
void main ()
{
int weekday;
printf("今天的食谱\n 请输入星期几\n");
scanf("%d",&weekday);
switch (weekday)
{
case 1:printf("星期一:青菜\n");
break;
case 2:printf("星期二:鸡\n");
break;
case 3:
printf("星期三:鱼\n");
break;
case 4:
printf("星期四:肉\n");
break;
case 5:printf("星期五:鸡蛋\n");
break;
case 6:
printf("星期六:海鲜\n");
break;
case 7:
printf("星期日:豆制品\n");
break;
default:
printf("输入有误\n");
break;
}

}