static void Main(string[] args)
{
MyDate date1 = new MyDate(DateTime.Now);
Console.WriteLine(date1.ToString());
MyDate date2 = new MyDate(new DateTime(2015, 12, 4));
Console.WriteLine(date2.ToString());
Console.WriteLine(MyDate.Sub(date1, date2).ToString());
Console.WriteLine(MyDate.Add(date1, date2).ToString());
//Delay
Console.ReadKey();
}
public static MyDate Sub(MyDate date1, MyDate date2) => date1 - date2;
public static MyDate Add(MyDate date1, MyDate date2) => date1 + date2;
