Reference for package '#rtl'

strpos

Find position of one null-terminated substring in another.

Declaration

Source position: syspchh.inc line 34

  function strpos(str1: pchar; str2: pchar) : pchar;
  function strpos(str1: pwidechar; str2: pwidechar) : pwidechar;

Description

Returns a pointer to the first occurrence of S2 in S1. If S2 does not occur in S1, returns Nil.

Errors

None.

See also

Name Description
StrRScan Find last occurrence of a character in a null-terminated string.
StrScan Find first occurrence of a character in a null-terminated string.

Example

Program Example15;
Uses strings;
{ Program to demonstrate the StrPos function. }
Const P : PChar = 'This is a PChar string.';
      S : Pchar = 'is';
begin
  Writeln ('Position of ''is'' in P : ',sizeint(StrPos(P,S))-sizeint(P));
end.