#include <stdio.h>
int main(){
int week=0;
printf("请输入一个数字(1-7);");
scanf("%d",&week);
if(week>=1 &&week <=7);
if(week==1){
//这里是week等于1的情况
printf("星期一\n");
}else if(week==2){
//这里是week等于2的情况
printf("星期二\n");
}else if(week==3){
//这里是week等于3的情况
printf("星期三\n");
}else if(week==4){
//这里是week等于4的情况
printf("星期四\n");
}else if(week==5){
//这里是week等于5的情况
printf("星期五\n");
}else if(week==6){
//这里是week等于6的情况
printf("星期六\n");
}else if(week==7){
//这里是week等于7的情况
printf("星期天\n");
}else {
printf("你输入的数字有误\n");
}
return 0;
}