| [Overview][Constants][Procedures and functions][Index] |
Calculate the first day of the month, given a date in that month.
Source position: dateutil.inc line 143
function StartOfTheMonth( |
const AValue: TDateTime |
):TDateTime; |
AValue |
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Date to return first of month from |
First day of month as a TDateTime value.
StartOfTheMonth extracts the year and month parts of AValue and returns a TDateTime value with the date of the first day of that year and month as the StartOfAMonth function.
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Return first date of month, given a year/month pair. |
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Calculate a DateTime value representing the last day of a year, given a date in that year. |
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Calculate a DateTime value representing the last day of a year |
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Calculate a DateTime value representing the last day of the month, given a day in that month. |
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Calculate a datetime value representing the last day of the indicated month |
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Return a day of the week, given a year, week and day in the week. |
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Return the first day of the week, given a date. |
Program Example28; { This program demonstrates the StartOfTheMonth function } Uses SysUtils,DateUtils; Const Fmt = '"First day of this month : "dd mmmm yyyy'; Begin Writeln(FormatDateTime(Fmt,StartOfTheMonth(Today))); End.