public static void Main()
Console.WriteLine("Please type a month's number (between 1-12)");
int month = int.Parse(Console.ReadLine());
else if (month == 4 || month == 6 || month == 9 || month == 11 )
Console.WriteLine("Please type a year's number (between 1-12)");
int year = int.Parse(Console.ReadLine());
if ( year / 4 == year / 4.0)
Console.WriteLine("February has 29 days");