Reference for package '#rtl'

PreviousDayOfWeek

Given a day of the week, return the previous day of the week.

Declaration

Source position: dateutil.inc line 115

  function PreviousDayOfWeek(DayOfWeek: Word) : Word;

Description

PreviousDayOfWeek returns the previous day of the week. If the current day is the first day of the week (1) then the last day will be returned (7).

Remark

Note that the days of the week are in ISO notation, i.e. 1-based. !!!

See also

Name Description
Yesterday Return the previous day.

Example

Program Example22;
{ This program demonstrates the PreviousDayOfWeek function }
Uses SysUtils,DateUtils;
Var
  D : Word;
Begin
  For D:=1 to 7 do
    Writeln('Previous day of ',D,' is : ',PreviousDayOfWeek(D));
End.