From: Ian Miller <itmiller AT dra DOT hmg DOT gb>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: how to interpret this...
Date: Tue, 03 Dec 1996 12:45:00 +0000
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G.P. Tootell wrote:
> i'm used to doing a=b=c=0; to set more than one variable at a time, and by error
> i had extended this analogy to if (a==b==c==0) { do stuff }...
> instead of treating this as a==b && b==c && c==0, it treated it as a==b && c==0
> can anyone explain this behavior? should it not have been reported as a warning?
> 
> nik
> 
> --

I'd say it means (((a==b)==c)==0). (a==b) is 1 if they are the same
or 0 if they are different (logical true or false). So it becomes
((0==c)==0) if a!=b or ((1==c)==0) if a==b. Get the idea?

Basically, if you mean a==b && b==c && c==0
then you should write  a==b && b==c && c==0.

I would write a==0 && b==0 && c==0 because it's clearer :) 
-- 
Ian Miller, Dorset, UK
DJGPP 2.01, Win95 DOS box (LFN undefined, FNCASE=y)