例 次の例では、 Subtract メソッドと減算演算子を示します。 System::DateTime date1 = System::DateTime( 1996, 6, 3, 22, 15, 0 ); System::DateTime date2 = System::DateTime( 1996, 12, 6, 13, 2, 0 ); System::DateTime date3 = System::DateTime( 1996, 10, 12, 8, 42, 0 ); // diff1 gets 185 days, 14 hours, and 47 minutes. System::TimeSpan diff1 = date2.Subtract( date1 ); // date4 gets 4/9/1996 5:55:00 PM. System::DateTime date4 =