Given a day of the week, return the previous day of the week.
Source position: dateutil.inc line 137
function PreviousDayOfWeek( |
DayOfWeek: Word |
):Word; |
DayOfWeek |
|
Day of the week. |
The day of the week prior to DayOfWeek.
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. |
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Return the previous day. |
Program Example22; { This program demonstrates the PreviousDayOfWeek function } Uses SysUtils,DateUtils; Var D : Word; Begin or:=1 to 7 do Writeln('Previous day of ',D,' is : ',PreviousDayOfWeek(D)); End.