DaysInMonth

Return the number of days in the month in which a date occurs.

Declaration

Source position: dateutil.inc line 99

function DaysInMonth(

const AValue: TDateTime

):Word;

Arguments

AValue

Date in month of which to calculate the number of days.

Function result

Number of days in the month in which AValue occurs.

Description

DaysInMonth returns the number of days in the month in which AValue falls. The return value takes leap years into account.

Example

Program Example16;

{ This program demonstrates the DaysInMonth function }

Uses SysUtils,DateUtils;

Var
  Y,M : Word;

Begin
  For Y:=1992 to 2010 do
    For M:=1 to 12 do
      Writeln(LongMonthNames[m],' ',Y,' has ',DaysInMonth(EncodeDate(Y,M,1)),' days.');
End.

Notes

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WeeksInAYear		Return the number of weeks in a given year
WeeksInYear		return the number of weeks in the year, given a date
DaysInYear		Return the number of days in the year in which a date occurs.
DaysInAYear		Number of days in a particular year.
DaysInAMonth		Number of days in a month of a certain year.