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| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Shortened form of condition |
| Date | 2015-11-10 11:13 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87k2pqm7jw.fsf@bsb.me.uk> (permalink) |
| References | <b6b2a9ec-4944-4e34-95e1-779161509469@googlegroups.com> <62775b24-22c8-4b78-85ca-6ca99456f2c5@googlegroups.com> <b00e933e-a728-4daa-a36a-0ac6a929991d@googlegroups.com> <3093d138-02fd-4830-82b5-97feec5148e9@googlegroups.com> |
Alla _ <modelling.data@gmail.com> writes:
<snip>
> Exactly. This what I was thinking about, but in that program
> the author doesn't have EOF condition that turns end_of_text
> to true, but the condition when the user has not entered any
> text at all, i.e. text[0] = '\0'. This what confuses me.
> It would be clear had they offered the EOF condition.
> Given they didn't, I don't see why the loop should ever
> terminate.
This is a very interesting remark, though I'm not sure how to help
dislodge you from this misunderstanding. You are saying that this is
clear:
while (end_of_text == 0)
{
int ch = fgetc(stdin);
if (ch == EOF)
end_of_text = 1;
else /* do something with the data */
}
but this
while (end_of_text == 0)
{
read_line(text)
if (text[0] == '\0')
end_of_text = 1;
else /* do something with the data */
}
is not. Mainly, it seems, because the first refers to EOF. Most
experienced programmer will see these two as slight variation of the
same pattern. So what about this one that is half way between the two?
while (end_of_text == 0)
{
int ch = fgetc(stdin);
if (ch == 'q')
end_of_text = 1;
else /* do something with the data */
}
What does it do?
--
Ben.
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Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-09 06:23 -0800
Re: Shortened form of condition Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 14:44 +0000
Re: Shortened form of condition James Kuyper <jameskuyper@verizon.net> - 2015-11-09 10:17 -0500
Re: Shortened form of condition Barry Schwarz <schwarzb@dqel.com> - 2015-11-09 09:20 -0800
Re: Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-09 10:11 -0800
Re: Shortened form of condition Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 10:35 -0800
Re: Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-10 00:14 -0800
Re: Shortened form of condition Barry Schwarz <schwarzb@dqel.com> - 2015-11-10 03:04 -0800
Re: Shortened form of condition glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-10 21:42 +0000
Re: Shortened form of condition Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-10 11:13 +0000
Re: Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-10 07:58 -0800
Re: Shortened form of condition Richard Heathfield <rjh@cpax.org.uk> - 2015-11-10 17:06 +0000
Re: Shortened form of condition James Kuyper <jameskuyper@verizon.net> - 2015-11-10 12:11 -0500
Re: Shortened form of condition James Kuyper <jameskuyper@verizon.net> - 2015-11-10 14:01 -0500
Re: Shortened form of condition Keith Thompson <kst-u@mib.org> - 2015-11-10 08:30 -0800
Re: Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-10 09:07 -0800
Re: Shortened form of condition Keith Thompson <kst-u@mib.org> - 2015-11-10 09:29 -0800
Re: Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-10 11:02 -0800
Re: Shortened form of condition Keith Thompson <kst-u@mib.org> - 2015-11-10 11:33 -0800
Re: Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-11 00:28 -0800
Re: Shortened form of condition Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-11 16:05 +0000
Re: Shortened form of condition glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-12 09:29 +0000
Re: Shortened form of condition Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-12 10:56 +0000
Re: Shortened form of condition Richard Heathfield <rjh@cpax.org.uk> - 2015-11-11 16:24 +0000
Re: Shortened form of condition Keith Thompson <kst-u@mib.org> - 2015-11-11 08:53 -0800
Re: Shortened form of condition Richard Heathfield <rjh@cpax.org.uk> - 2015-11-11 16:59 +0000
Re: Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-11 06:42 -0800
Re: Shortened form of condition Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-10 14:04 -0500
Re: Shortened form of condition Barry Schwarz <schwarzb@dqel.com> - 2015-11-10 10:43 -0800
Re: Shortened form of condition James Kuyper <jameskuyper@verizon.net> - 2015-11-09 13:44 -0500
Re: Shortened form of condition Keith Thompson <kst-u@mib.org> - 2015-11-09 10:57 -0800
Re: Shortened form of condition Philip Lantz <prl@canterey.us> - 2015-11-10 01:52 -0800
Re: Shortened form of condition Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 19:35 +0000
Re: Shortened form of condition Keith Thompson <kst-u@mib.org> - 2015-11-09 11:52 -0800
Re: Shortened form of condition Alla _ <modelling.data@gmail.com> - 2015-11-10 00:33 -0800
Re: Shortened condition Richard Heathfield <rjh@cpax.org.uk> - 2015-11-10 09:00 +0000
Re: Shortened form of condition Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-10 16:01 -0800
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