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From: jh4o+@andrew.cmu.edu (Jeffrey T. Hutzelman)
Newsgroups: comp.lang.c
Subject: Re: Assignment in test: OK?
Message-ID: <0atunAG00VosQ2nkcN@andrew.cmu.edu>
Date: 7 Sep 90 14:21:00 GMT
References: <1990Sep5.185451.25532@DRD.Com> <BURLEY.90Sep6024459@world.std.com>,
	<1990Sep7.042759.3804@ux1.cso.uiuc.edu>
Organization: Carnegie Mellon, Pittsburgh, PA
Lines: 18
In-Reply-To: <1990Sep7.042759.3804@ux1.cso.uiuc.edu>

John,
    Good idea; it works great as long as you aren't trying to compare 2
variables.  However, I think the intent of the original code was to
perform an assignment and then do a test on the result (look carefully;
there's a > or < in there somewhere), similar to the following, which I
use all the time:

if ( ( file_ptr = fopen (filename, mode) ) == NULL )
	{
	/* print a message and exit */
	}

-----------------
Jeffrey Hutzelman
America Online: JeffreyH11
Internet/BITNET:jh4o+@andrew.cmu.edu, jhutz@drycas.club.cc.cmu.edu

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