int main()
{
    int value;
    cout<<"Enter month number (1-12): ";
    cin >> value;
    if (value == 1 || value == 3 || value == 5 || value == 7 || value == 8 || value == 10 || value == 12) {
        cout<<"Number of days : 31 days";
    } else if (value == 2) {
        cout<<"Number of days : 28/29 days";
    } else if (value == 4 || value == 6 || value == 9 || value == 11) {
        cout<<"Number of days : 30 days";
    } else {
        cout<<"Please enter month number between (1-12).";
    }
    return 0;
}