编辑代码

#include <stdio.h>
int main () {
    int week = 1;
    printf("请输入一个数字（1-7):");
    scanf("%d",&week);
    if(week >= 1 && week <= 7){

        if(week == 1){
        printf("星期一\n");
        }else if (week == 2){
            printf("星期二\n");
        }else{
            printf("星期天\n");
        }

    }else{
        printf("你输入的数字有误\n");
    }
    return 0;
}