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StrLen¶

Length of a null-terminated string.

Declaration¶

Source position: syspchh.inc line 19

function StrLen(p: PAnsiChar) : SizeInt;  overload; overload;external name 'FPC_PCHAR_LENGTH';

function StrLen(p: PWideChar) : SizeInt;  overload; overload;external name 'FPC_PWIDECHAR_LENGTH';

Description¶

Returns the length of the null-terminated string P. If P equals Nil then zero (0) is returned.

Errors¶

None.

See also¶

Name	Description
StrNew	Allocate room for new null-terminated string.

Example¶

Program Example1;

Uses strings;

{ Program to demonstrate the StrLen function. }

Const P : PChar = 'This is a constant pchar string';

begin
  Writeln ('P         : ',p);
  Writeln ('length(P) : ',StrLen(P));
end.