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    WeeksBetween

    Calculate the number of whole weeks between two TDateTime values.

    Declaration

    Source position: dateutil.inc line 281

    function WeeksBetween(const ANow: TDateTime; const AThen: TDateTime)
                      : Integer;

    Arguments

    Name Description
    ANow First moment in time.
    AThen Second moment in time.

    Function result

    Number of whole weeks between ANow and AThen.

    Description

    WeeksBetween returns the number of whole weeks between ANow and AThen. This means the fractional part of a Week is dropped.

    See also

    Name Description
    YearsBetween Calculate the number of whole years between two TDateTime values.
    MonthsBetween Calculate the number of whole months between two TDateTime values.
    DaysBetween Number of whole days between two TDateTime values.
    HoursBetween Calculate the number of whole hours between two TDateTime values.
    MinutesBetween Calculate the number of whole minutes between two TDateTime values.
    SecondsBetween Calculate the number of whole seconds between two TDateTime values.
    MilliSecondsBetween Calculate the number of whole milliseconds between two TDateTime values.

    Example

    Program Example57;

{ This program demonstrates the WeeksBetween function }

Uses SysUtils,DateUtils;

Procedure Test(ANow,AThen : TDateTime);

begin
 Write('Number of weeks between ');
 Write(DateToStr(AThen),' and ',DateToStr(ANow));
 Writeln(' : ',WeeksBetween(ANow,AThen));
end;

Var
  D1,D2 : TDateTime;

Begin
  D1:=Today;
  D2:=Today-7;
  Test(D1,D2);
  D2:=Today-8;
  Test(D1,D2);
  D2:=Today-14;
  Test(D1,D2);
  D2:=Today-35;
  Test(D1,D2);
  D2:=Today-36;
  Test(D1,D2);
  D2:=Today-17;
  Test(D1,D2);
End.