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

AnsiStrComp

Compare two null-terminated strings. Case sensitive.

Declaration

Source position: sysstrh.inc line 94

function AnsiStrComp(

  S1: PChar;

  S2: PChar

):Integer;

Description

AnsiStrComp compares 2 PChar strings, and returns the following result:

<0
if S1<S2.
0
if S1=S2.
>0
if S1>S2.

The comparision of the two strings is case-sensitive.

Remark: A widestring manager must be installed in order for this function to work correctly with various character sets.

Errors

None.

See also

AnsiCompareText

  

Compare 2 ansistrings, case insensitive, ignoring accents characters.

AnsiCompareStr

  

Compare 2 ansistrings, case sensitive, ignoring accents characters.

Example

Program Example54;

{ This program demonstrates the AnsiStrComp function }

Uses sysutils;

Procedure TestIt (S1,S2 : Pchar);

Var R : Longint;

begin
  R:=AnsiStrComp(S1,S2);
  Write ('"',S1,'" is ');
  If R<0 then
    write ('less than ')
  else If R=0 then
    Write ('equal to ')
  else
    Write ('larger than ');
  Writeln ('"',S2,'"');
end;

Begin
  Testit('One string','One smaller string');
  Testit('One string','one string');
  Testit('One string','One string');
  Testit('One string','One tall string');
End.
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