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Increase value of integer variable
Source position: system.fpd line 50
procedure Inc( |
var X: TOrdinal |
); |
var X: TOrdinal; |
Increment: TOrdinal |
); |
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.
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.
|
Decrease value of variable |
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.