Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!samsung!spool.mu.edu!news.cs.indiana.edu!cs.widener.edu!sven
From: sven@cs.widener.edu (Sven Heinicke)
Newsgroups: comp.lang.c
Subject: Re: using "=" in a conditional (was Funny Mistake)
Message-ID: <1991Mar21.014619.27403@cs.widener.edu>
Date: 21 Mar 91 01:46:19 GMT
References: <1991Mar20.031419.3677@isis.cs.du.edu> <11195@dog.ee.lbl.gov>
Organization: Widener CS Dept
Lines: 25
Nntp-Posting-Host: shirley.cs.widener.edu

In <11195@dog.ee.lbl.gov>, torek@elf.ee.lbl.gov writes:
>In article <1991Mar20.031419.3677@isis.cs.du.edu>
>cla@isis.UUCP (Chuck Anderson) writes:
>>You can do a nice string copy with this construct as well:
>>   while (*dest++ = *source++);

When I read something like this I automaticely think not equal to zero.

>
>Of course, you can also write it as:
>
>	while ((*dest++ = *source++) != 0)	/* or != '\0' */
>		/* void */;
>

And when I am typing c code, rather often my thincking goes much faster then
my typing, especialy with the the five kinds of key boards I normally use (IBM
PC, VT101, VT330, sunwork station and macintosh) and all of those symbols slow
me down.  If I can pal to go through my program ofterwords I sometime put
in the != 0 but only in cases that get rather complicated arguments in c.

-- 
sven@cs.widener.edu                                  Widener CS system manager
Sven Mike Heinicke                                          and Student
(pssmheinicke@cyber.widener.edu (if you must))