A299.计算日期题解

#include<iostream>
using namespace std;
void x(int x){
    if(x==1)cout<<"monday";
    else if(x==2)cout<<"tuesday";
    else if(x==3)cout<<"wednesdy";
    else if(x==4)cout<<"thursday";
    else if(x==5)cout<<"friday";
    else if(x==6)cout<<"saturday";
    else cout<<"sunday";
}
int main(){
    int n;
    cin>>n;
    if(1+n>7&&(1+n)%7==0)x(7);
    else if(1+n<=7)x(1+n);
    else x((1+n)%7);
}