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Groups > comp.lang.c > #25916

Re: scanf()

From Phil Carmody <thefatphil_demunged@yahoo.co.uk>
Newsgroups comp.lang.c
Subject Re: scanf()
Date 2012-09-05 00:13 +0300
Organization A noiseless patient Spider
Message-ID <87pq611ogu.fsf@bazspaz.fatphil.org> (permalink)
References (7 earlier) <lnwr15t0i1.fsf@nuthaus.mib.org> <cfaea4d2-9a6b-483b-8439-e5e2106ea065@googlegroups.com> <lnhas7u9np.fsf@nuthaus.mib.org> <e119a1a7-94eb-4bd6-9ec2-ea3c209c7fe9@googlegroups.com> <k0akhf$cgf$1@news.m-online.net>

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"Heinrich Wolf" <invalid@invalid.invalid> writes:
> "Malcolm McLean" <malcolm.mclean5@btinternet.com> schrieb im
> Newsbeitrag
> news:e119a1a7-94eb-4bd6-9ec2-ea3c209c7fe9@googlegroups.com...
> תריך יום רשון, 12 באוגסט 2012 21:39:54 UTC+1, מת Keith Thompson:
> > Malcolm McLean <malcolm.mclean5@btinternet.com> writes:
> >
> >
> > > It mean the implementation decides what the result of the operation will
> > > be.
> >
> > No, the implementation needn't decide *anything*.
> >
> Someone writes scanf(). It's possible, though unlikely for someone given
> such a job, that he's never considered that exponents might be out of
> range. If he has considered that possibility, he must decide what to do

         ^^

> with such input. He might write an error message, quietly return a NaN, or
> return a corrupted result which retain backwards comptability with a
> previous
> version of the function. There's a case for all of these. But he's got to
> opt for something.

Unless he hasn't. See the "if" above, and presume falsity of the predicate.

Phil
-- 
> I'd argue that there is much evidence for the existence of a God.
Pics or it didn't happen.
-- Tom (/. uid 822)

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Thread

scanf() Edward Rutherford <edward.p.rutherford79@REMOVETHIS.gmail.com> - 2012-08-06 20:58 +0000
  Re: scanf() Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-06 17:29 -0400
    Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-08-06 14:40 -0700
  Re: scanf() James Kuyper <jameskuyper@verizon.net> - 2012-08-06 17:39 -0400
  Re: scanf() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-08-06 22:49 +0100
    Re: scanf() Edward Rutherford <edward.p.rutherford79@REMOVETHIS.gmail.com> - 2012-08-07 18:37 +0000
      Re: scanf() James Kuyper <jameskuyper@verizon.net> - 2012-08-07 15:01 -0400
      Re: scanf() Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-07 15:03 -0400
      Re: scanf() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-08-07 20:51 +0100
      Re: scanf() John Bode <jfbode1029@gmail.com> - 2012-08-09 14:00 -0700
        Re: scanf() Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-08-11 03:08 -0700
          Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-08-11 10:40 -0700
            Re: scanf() Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-08-11 13:34 -0700
              Re: scanf() "BartC" <bc@freeuk.com> - 2012-08-11 23:04 +0100
              Re: scanf() James Kuyper <jameskuyper@verizon.net> - 2012-08-11 19:20 -0400
              Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-08-11 17:30 -0700
                Re: scanf() Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-11 20:41 -0400
                Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-08-11 18:13 -0700
                Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-08-11 18:16 -0700
                Re: scanf() Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-11 21:32 -0400
                Re: scanf() Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-08-12 04:07 -0700
                Re: scanf() James Kuyper <jameskuyper@verizon.net> - 2012-08-12 08:03 -0400
                Re: scanf() Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-08-12 06:41 -0700
                Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-08-12 13:39 -0700
                Re: scanf() Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-08-12 14:20 -0700
                Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-08-12 16:33 -0700
                Re: scanf() "Heinrich Wolf" <invalid@invalid.invalid> - 2012-08-13 12:22 +0200
                Re: scanf() Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-09-05 00:13 +0300
                Re: scanf() Tim Rentsch <txr@alumni.caltech.edu> - 2012-09-07 14:18 -0700
                Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-09-07 15:02 -0700
                Re: scanf() Tim Rentsch <txr@alumni.caltech.edu> - 2012-09-07 17:25 -0700
                Re: scanf() Keith Thompson <kst-u@mib.org> - 2012-09-07 18:35 -0700
              Re: scanf() Seungbeom Kim <musiphil@bawi.org> - 2012-08-12 21:05 -0700
        Re: scanf() Robert Wessel <robertwessel2@yahoo.com> - 2012-08-11 17:37 -0500

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