From:	Robert Hoehne <Robert DOT Hoehne AT Mathematik DOT TU-Chemnitz DOT DE>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Bit-wise compare
Date:	Tue, 22 Jul 1997 11:23:15 +0200
Organization:	TU Chemnitz-Zwickau
Lines:	33
Message-ID:	<33D47C03.11C3B003@Mathematik.TU-Chemnitz.DE>
References:	<33D36DA3 DOT 7EB2 AT lr DOT net>
NNTP-Posting-Host:	sirius.hrz.tu-chemnitz.de
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Isaac Waldron wrote:
> 
> int has_item(int a, int b)
> {
>         if (a && b)
should be:
          if (a & b)


> int main()
> {
>         int a, b, c, d;
>         a = a || WEAPON_SWORD_1;
>         b = b || WEAPON_SWORD_2;
should be:
          a = a | WEAPON_SWORD_1;
          b = b | WEAPON_SWORD_2;

In general you have to distinguish the operators
&& and & (the same for || and | and so on). May be
you come from a pascal background where these operators
are the same, but in C there is a differnce between
the comparing oerators (which have the symbol twice) and
the logical bit operators (which have the symbol alone).

Robert
-- 
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* Robert Hoehne, Fakultaet fuer Mathematik, TU-Chemnitz-Zwickau *
* Post:    Am Berg 3, D-09573 Dittmannsdorf                     *
* e-Mail:  Robert DOT Hoehne AT Mathematik DOT TU-Chemnitz DOT DE              *
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