03. Month Printer(switch , ternary operator and array solutions)

Решение със switch:

#include <iostream>

using namespace std;

int main() {
    int number;
    cin >> number;

    string result = "";

    switch (number) {
    case 1:
        result = "January";
        break;
    case 2:
        result = "February";
        break;
    case 3:
        result = "March";
        break;
    case 4:
        result = "April";
        break;
    case 5:
        result = "May";
        break;
    case 6:
        result = "June";
        break;
    case 7:
        result = "July";
        break;
    case 8:
        result = "August";
        break;
    case 9:
        result = "September";
        break;
    case 10:
        result = "October";
        break;
    case 11:
        result = "November";
        break;
    case 12:
        result = "December";
        break;
    default:
        result = "Error!";
        break;
    }

    cout << result << endl;
    return 0;
}

Решение с тернарен оператор:

#include <iostream>

using namespace std;

int main() {
    int number;
    cin >> number;

    string result =
        number == 1 ? "January" :
        number == 2 ? "February" :
        number == 3 ? "March" :
        number == 4 ? "April" :
        number == 5 ? "May" :
        number == 6 ? "June" :
        number == 7 ? "July" :
        number == 8 ? "August" :
        number == 9 ? "September" :
        number == 10 ? "October" :
        number == 11 ? "November" :
        number == 12 ? "December" : "Error!";

    cout << result << endl;
    return 0;
}

Решение с масив:

#include <iostream>

using namespace std;

int main() {
    int number;
    cin >> number;

    string months[13] = {
        "Error!",
        "January",
        "February",
        "March",
        "April",
        "May",
        "June",
        "July",
        "August",
        "September",
        "October",
        "November",
        "December"
    };

    cout << months[number > 0 && number < 13 ? number : 0] << endl;
    return 0;
}