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[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'System' (#rtl)
Inc

Increase value of integer variable

Declaration

Source position: system.fpd line 50

procedure Inc(

var X: TOrdinal

);procedure Inc(

var X: TOrdinal;

Increment: TOrdinal

);

Description

Inc increases the value of X with Increment. If Increment isn't specified, then 1 is taken as a default.

Inc can be used on typed pointers: in that case it increases the value with Increment the size of the type the pointer points to. This works independently of the setting of the $POINTERMATH directive.

Errors

If range checking is on, then A range check can occur, or an overflow error, when an attempt is made to increase X over its maximum value.

See also

Dec

Decrease value of variable

Example

Program Example32; { Program to demonstrate the Inc function. } Const C : Cardinal = 1; L : Longint = 1; I : Integer = 1; W : Word = 1; B : Byte = 1; SI : ShortInt = 1; CH : Char = 'A'; begin Inc (C); { C:=2 } Inc (L,5); { L:=6 } Inc (I,-3); { I:=-2 } Inc (W,3); { W:=4 } Inc (B,100); { B:=101 } Inc (SI,-3); { Si:=-2 } Inc (CH,1); { ch:='B' } end. Documentation generated on: May 14 2021

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