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C:DOCUME~11630~10016~1new.pwn(16121) : warning 225: unreachable code 
Pawn compiler 3.2.3664              Copyright (c) 1997-2006, ITB CompuPhase 

Header size:           8060 bytes 
Code size:          1906412 bytes 
Data size:          6878916 bytes 
Stack/heap size:      16384 bytes; estimated max. usage: unknown, due to recursion 
Total requirements: 8809772 bytes 
1 Warning.

вот строка:

if(txt[0]=='.' || (txt[0]=='?' && strlen(txt)>1)) return 0;