Вводный курс: основы C++ | Урок 2: Создание и применение вектора 2/3

#include <iostream>
#include <vector>
#include <string>

using namespace std;

int main() {
    vector<int> month_lengths = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
    vector<string> month_name = { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };
    int number_month;
    cin >> number_month;
    if (number_month >= 1 && number_month <= month_lengths.size()) {
        std::cout << "There are " << month_lengths[number_month-1] << " days in " << month_name[number_month-1] << endl;
    }
    else {
        std::cout << "Incorrect month";
    }
}