Xref: news2.mv.net comp.os.msdos.djgpp:2346
From: Erik Max Francis <max AT alcyone DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: another bug of scanf?
Date: Mon, 01 Apr 1996 07:46:13 -0800
Organization: Alcyone Systems
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Message-ID: <315FFA45.4884D975@alcyone.com>
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To: djgpp AT delorie DOT com
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Toru Suzuki wrote:

> Nevertheless scanf() of almost UNIX returns EOF(-1) if the input ends
> before the first conflict or conversion, it seems that V2 returns
> NULL(0). Is this bug, or not?

ANSI dictates that the ...scanf family should return EOF upon input failure
before _any_ conversion.  Otherwise it returns the number of input items
assigned.  If a matching failure occurs early on, this _can_ be zero.  That
is, returning 0 because of an early failure is correct behavior.  It only
returns EOF if input ends before anything is matched.

-- 
Erik Max Francis &tSftDotIotE && http://www.alcyone.com/max && max AT alcyone DOT com
San Jose, California, U.S.A. && 37 20 07 N 121 53 38 W && the 4th R is respect
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