public static void Main()
DateTime birthday = new DateTime(2001, 8, 21);
DateTime today = DateTime.Now;
yAge = today.Year - birthday.Year;
mAge = today.Month - birthday.Month;
dAge = today.Day - birthday.Day;
if(yAge >= 21 && mAge >= 0 && dAge >= 0)
Console.WriteLine("Enjoy that beer!");
Console.WriteLine("You can not legally drink");