Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!tut.cis.ohio-state.edu!snorkelwacker!spdcc!ima!cfisun!lakart!dg
From: dg@lakart.UUCP (David Goodenough)
Newsgroups: comp.lang.c
Subject: Re: EOF considered harmful
Message-ID: <732@lakart.UUCP>
Date: 27 Oct 89 16:29:18 GMT
References: <266@m1.cs.man.ac.uk>
Organization: Lakart Corporation, Newton, MA
Lines: 23

ian@r6.UUCP (Ian Cottam) sez:
> 3) The, to my mind, awful idiom in 1) above is avoided, with the extra
>    benefit that the ``(ch= getchar() != EOF)'' slip up will not be made.

	while (EOF != (ch = getchar()))
	  putchar(ch);

NOW try leaving the parentheses off the (ch = getchar()) bit. As a side
note (and as has already been observed) the general construct:

	if (CONSTANT == variable)

will always be safer than:

	if (variable == CONSTANT)

because CONSTANT isn't an lvalue, so the compiler complains if you put
= instead of ==
-- 
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