用数组取代复杂分支结构

include<iostream>
#include<cstdio>
#include<string>

#pragma warning(disable : 4996)

#define NUM 100

//数组

using namespace std;

string weekday[] = { "monday","tuesday","wednesday","thursday","friday"
                    "saturday","sunday" };

int main() {
    
    int n;
    cin >> n;
    if (n<1||n>7)
    {
        cout << "illegal\n";
    }
    else
    {
        cout << weekday[n - 1] << endl;
    }

    
    return 0;

}