题解

通过char数组存星期英文，再通过if语句进行判断，是程序达到题目要求

#include <iostream>
using namespace std;

int main() {
    char str[7][10] = {"monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"};
    int n;
    cin >> n;
    if (n < 7 && n > 0) {
        cout << str[n];
    }
	else {
        n %= 7;
        if (n == 0) n = 0;
        cout << str[n];
    }
    return 0;
}