Node:Inc, Next:, Previous:in, Up:Reference



Inc

Synopsis

For ordinal types:

procedure Inc (var x: ordinal_type);
or
procedure Inc (var x: ordinal_type; Amount: Integer);

For pointer types:

procedure Inc (var p: any_pointer_type);
or
procedure Inc (var p: any_pointer_type; Amount: Integer);

Description

For ordinal types, inc increases the value of x by one or by amount if it is given.

If the argument p is pointing to a specified type (typed pointer), inc increases the address of p by the size of the type p is pointing to or by amount times that size respectively. If p is an untyped pointer (i.e. p is of type Pointer), p is increased by one.

Conforming to

Inc is a Borland Pascal extension. Yet application of Inc to pointers is defined in Borland Pascal. The combination of the second argument with application to pointers is a GNU Pascal extension.

Example


program IncDemo;
var
  Foo: Integer;
  Bar: array [1 .. 5] of Integer;
  Baz: ^Integer;
begin
  Foo := 4;
  Inc (Foo, 5);    { yields 9 }
  {$X+}            { Turn on extended systax }
  Baz := @Bar[1];  { Baz points to y[1] }
  Inc (Baz, 2);    { Baz points to y[3] }
end.

See also

Dec, Pred, Succ, Pointer Arithmetics.