Re: is fflush(stdin) conformant???

Article View: comp.std.c

Article #2069

#2069

From: Murray Nesbitt
Date: Thu, 05 Nov 1992 11:02

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mgk@sql.sybase.com (Michael Keirnan aka Joe Cool) writes:

>I am not actually comtemplating using this construct. A coworker is
>enrolled in a course where the instructor has advised flushing stdin
>(yes, stdin) in conjunction with using scanf() to "flush the unwanted
>newline." This seemed rather odd to me, but hey, what do I know?
>So what sayeth the gospel on the subject?

fflush()ing an input stream has no defined effect in ANSI C - it is
intended for output streams or update streams (in which the most
recent I/O operation was not input) only.

It may "flush the unwanted newline" on some particular systems, but if
the instructor claims it is a universal way of doing this in C, she's
wrong.

-- 
Murray

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Message-ID: <MJN.92Nov5030241@pseudo.uucp>

Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!torn!utzoo!telly!druid!pseudo!mjn

References: <MGK.92Nov2131855@cedar.sql.sybase.com>

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Newsgroups: comp.std.c
Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!torn!utzoo!telly!druid!pseudo!mjn
From: mjn@pseudo.uucp (Murray Nesbitt)
Subject: Re: is fflush(stdin) conformant???
Organization: Private system in Toronto, ON
Date: Thu, 5 Nov 1992 11:02:41 GMT
Message-ID: <MJN.92Nov5030241@pseudo.uucp>
In-Reply-To: mgk@sql.sybase.com's message of 2 Nov 92 21:18:55 GMT
References: <MGK.92Nov2131855@cedar.sql.sybase.com>
Sender: mjn@pseudo.uucp (Murray Nesbitt)
Lines: 19

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