WeeksBetween

Calculate the number of whole weeks between two TDateTime values

Declaration

Source position: dateutil.inc line 258

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

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