Помоигет пожалуйста исправит 2 Error ^_^

[Arn]

\pawno\include\dutils.inc(368) : warning 219: local variable "str1" shadows a variable at a preceding level
\pawno\include\dutils.inc(368) : warning 219: local variable "str2" shadows a variable at a preceding level
\pawno\include\dutils.inc(427) : warning 219: local variable "str2" shadows a variable at a preceding level
\Samp-Rp.pwn(5001) : warning 219: local variable "house" shadows a variable at a preceding level
\Samp-Rp.pwn(5011) : warning 219: local variable "playername" shadows a variable at a preceding level
\Samp-Rp.pwn(10419) : warning 202: number of arguments does not match definition
\Samp-Rp.pwn(41158) : error 021: symbol already defined: "strtok"
\Samp-Rp.pwn(41172) : error 047: array sizes do not match, or destination array is too small
Pawn compiler 3.2.3664	 	 	Copyright (c) 1997-2006, ITB CompuPhase

2 Errors.

error

{
    new length = strlen(string);
	while ((index < length) && (string[index] <= ' '))
	{
		index++;
	}
	new offset = index;
	new result[20];
	while ((index < length) && (string[index] > ' ') && ((index - offset) < (sizeof(result) - 1)))
	{
		result[index - offset] = string[index];
		index++;
	}
	result[index - offset] = EOS;
	return result;
}