JapaneseCalendar::IsLeapDay Method (Int32, Int32, Int32, Int32)
Determines whether the specified date in the specified era is a leap day.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- year
- Type: System::Int32
An integer that represents the year.
- month
- Type: System::Int32
An integer from 1 to 12 that represents the month.
- day
- Type: System::Int32
An integer from 1 to 31 that represents the day.
- era
- Type: System::Int32
An integer that represents the era.
| Exception | Condition |
|---|---|
| ArgumentOutOfRangeException | year is outside the range supported by the calendar. -or- month is outside the range supported by the calendar. -or- day is outside the range supported by the calendar. -or- era is outside the range supported by the calendar. |
Leap years in the Japanese calendar correspond to the same leap years in the Gregorian calendar. A leap year in the Gregorian calendar is defined as a Gregorian year that is evenly divisible by four, except if it is divisible by 100. However, Gregorian years that are divisible by 400 are leap years. A common year has 365 days and a leap year has 366 days.
A leap day is a day that occurs only in a leap year. For example, the 29th day of Nigatsu (February) is the only leap day.
The following example calls IsLeapDay for the last day of the second month (February) for five years in each of the eras.
using namespace System; using namespace System::Globalization; int main() { // Creates and initializes a JapaneseCalendar. JapaneseCalendar^ myCal = gcnew JapaneseCalendar; // Creates a holder for the last day of the second month (February)-> int iLastDay; // Displays the header. Console::Write( "YEAR\t" ); for ( int y = 1; y <= 5; y++ ) Console::Write( "\t {0}", y ); Console::WriteLine(); // Checks five years in the current era. Console::Write( "CurrentEra:" ); for ( int y = 1; y <= 5; y++ ) { iLastDay = myCal->GetDaysInMonth( y, 2, JapaneseCalendar::CurrentEra ); Console::Write( "\t {0}", myCal->IsLeapDay( y, 2, iLastDay, JapaneseCalendar::CurrentEra ) ); } Console::WriteLine(); // Checks five years in each of the eras. for ( int i = 0; i < myCal->Eras->Length; i++ ) { Console::Write( "Era {0}:\t", myCal->Eras[ i ] ); for ( int y = 1; y <= 5; y++ ) { iLastDay = myCal->GetDaysInMonth( y, 2, myCal->Eras[ i ] ); Console::Write( "\t {0}", myCal->IsLeapDay( y, 2, iLastDay, myCal->Eras[ i ] ) ); } Console::WriteLine(); } } /* This code produces the following output. YEAR 1 2 3 4 5 CurrentEra: False False False True False Era 4: False False False True False Era 3: False False True False False Era 2: True False False False True Era 1: True False False False True */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.