File: tpointermath1.pp

package info (click to toggle)
fpc 3.2.2%2Bdfsg-20
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bookworm-backports
  • size: 341,276 kB
  • sloc: pascal: 3,820,179; xml: 194,356; ansic: 9,637; asm: 8,482; java: 5,346; sh: 4,813; yacc: 3,956; makefile: 2,686; lex: 2,661; javascript: 2,454; sql: 929; php: 474; cpp: 145; perl: 134; sed: 132; csh: 34; tcl: 7
file content (24 lines) | stat: -rw-r--r-- 532 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
{ %norun }
program tpointermath1;

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
type
  {$POINTERMATH ON}
  PByte = ^Byte; // Pointer arithmetic can be applied to types declared with PointerMath ON
  {$POINTERMATH OFF}
  PInteger = ^Integer;
var
  PB: PByte;
  PI: PInteger;
begin
  // This checks even with PointerMath=Off it still can be used for types declared with PointerMath=On
  PB := PB + 1;
  WriteLn(PB[1]);
  {$POINTERMATH ON}
  // It can also be used if explicitely declared in the code
  PI := PI + 1;
  WriteLn(PI[1]);
end.