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

# AnsiStrIComp

Compare two null-terminated strings. Case insensitive.

## Declaration

Source position: sysstrh.inc line 97

`function AnsiStrIComp(`
`S1: PChar;`
`S2: PChar`
`):Integer;`

## Description

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

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

The comparison of the two strings is case-insensitive.

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 Example55;

    { This program demonstrates the AnsiStrIComp function }

    Uses sysutils;

    Procedure TestIt (S1,S2 : Pchar);

    Var R : Longint;

    begin
      R:=AnsiStrIComp(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.