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From: philipl@azure.UUCP (Philip Lantz)
Newsgroups: net.lang.c
Subject: Re: more about programming style
Message-ID: <400@azure.UUCP>
Date: Wed, 7-Aug-85 01:55:13 EDT
Article-I.D.: azure.400
Posted: Wed Aug  7 01:55:13 1985
Date-Received: Sat, 3-Aug-85 03:24:27 EDT
References: <441@myriasb.UUCP>
Organization: Tektronix, Beaverton OR
Lines: 17

> Perhaps I'm being a bit sarcastic, but could it be that the reason experienced
> C programmers often use
> 
> 	if ((fp = fopen("file", "r")) == NULL) ...
> 
> is that the compiler will complain if you write
> 
> 	if ((fp = fopen("file", "r")) = NULL) ...
> 
> whereas it won't complain about
> 
> 	fp = fopen("file", "r");
> 	if (fp = NULL) ...
> 
> ???

Sure it will; at least PCC-based compilers will say "statement not reached".