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| From | Bartc <bc@freeuk.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: fprintf with /r/n outputs only one line |
| Date | 2015-08-30 10:25 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <mrui2v$c67$1@dont-email.me> (permalink) |
| References | (8 earlier) <call-line-20150829221628@ram.dialup.fu-berlin.de> <mrt95e$p2q$1@dont-email.me> <d754f5f3-9d9d-4b3d-861e-d5c3d0cabbc6@googlegroups.com> <mrtfa5$gfe$1@dont-email.me> <effect-function-20150830004413@ram.dialup.fu-berlin.de> |
On 30/08/2015 00:46, Stefan Ram wrote:
> Bartc <bc@freeuk.com> writes:
>> But in C especially, people prefer that even procedures return some sort
>> of value, perhaps a status. With the consequence that some try to cram
>> several such calls into a single expression.
>
> The distinction between functions and procedures is used,
> for example, in Pascal.
>
> In C, there are only functions, but we are still using the
> Pascal notions.
>
> Pascal was intended for teaching, and indeed for students,
> the distinction between functions and procedures is helpful.
I think it's helpful anyway. Even with C I sometimes use:
#define function
#define proc void
function int sum(int a,int b) {...}
proc init_data(void) {...}
>
> In my C course, I teach the distinction between »value
> functions« and »effect functions«. Value functions return
> a value and effect functions have an effect. (A function
> can also be both.)
>
> If there is one thing in C++ that is an improvement on C, it is
> that the C++ specification uses explicit labels for both the values
> and the effects of a function, which helps readers. For example:
>
> template<class U, class V> pair& operator=(pair<U, V>&& p);
>
> Requires: is_assignable<first_type&, U&&>::value is true and
> is_assignable<second_type&, V&&>::value is true.
>
> Effects: Assigns to first with std::forward<U>(p.first) and to
> second with std::forward<V>(p.second).
I could have used this example in the other thread about C++ being
impenetrable. But whatever this lot happens to mean, can anyone
seriously suggest that it is a simpler concept than just using
'function' and 'procedure'?
--
Bartc
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fprintf with /r/n outputs only one line Dale <dale@dalekelly.org> - 2015-08-28 23:08 -0400
Re: fprintf with /r/n outputs only one line Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-08-28 21:25 -0600
Re: fprintf with /r/n outputs only one line Dale <dale@dalekelly.org> - 2015-08-28 23:56 -0400
Re: fprintf with /r/n outputs only one line James Kuyper <jameskuyper@verizon.net> - 2015-08-28 23:34 -0400
Re: fprintf with /r/n outputs only one line Dale <dale@dalekelly.org> - 2015-08-29 00:02 -0400
Re: fprintf with /r/n outputs only one line Johann Klammer <klammerj@NOSPAM.a1.net> - 2015-08-29 06:51 +0200
Re: fprintf with /r/n outputs only one line Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-08-29 07:30 +0000
Re: fprintf with /r/n outputs only one line Keith Thompson <kst-u@mib.org> - 2015-08-29 01:23 -0700
Re: fprintf with /r/n outputs only one line James Kuyper <jameskuyper@verizon.net> - 2015-08-29 11:22 -0400
Re: fprintf with /r/n outputs only one line glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-29 16:59 +0000
Re: fprintf with /r/n outputs only one line Geoff <geoff@invalid.invalid> - 2015-08-30 11:40 -0700
Re: fprintf with /r/n outputs only one line Keith Thompson <kst-u@mib.org> - 2015-08-30 15:17 -0700
Re: fprintf with /r/n outputs only one line Geoff <geoff@invalid.invalid> - 2015-08-30 16:21 -0700
Re: fprintf with /r/n outputs only one line James Kuyper <jameskuyper@verizon.net> - 2015-08-30 19:45 -0400
Re: fprintf with /r/n outputs only one line Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-29 14:51 +0100
Re: fprintf with /r/n outputs only one line Ayan <selfjam@gmail.com> - 2015-08-29 10:24 -0400
Re: fprintf with /r/n outputs only one line James Kuyper <jameskuyper@verizon.net> - 2015-08-29 11:27 -0400
Re: fprintf with /r/n outputs only one line Ayan <selfjam@gmail.com> - 2015-08-29 14:31 -0400
Re: fprintf with /r/n outputs only one line Keith Thompson <kst-u@mib.org> - 2015-08-29 13:31 -0700
Re: fprintf with /r/n outputs only one line Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-29 16:03 +0100
Re: fprintf with /r/n outputs only one line Ike Naar <ike@iceland.freeshell.org> - 2015-08-29 16:50 +0000
Re: fprintf with /r/n outputs only one line Ike Naar <ike@iceland.freeshell.org> - 2015-08-29 17:05 +0000
Re: fprintf with /r/n outputs only one line Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-29 19:39 +0100
Re: fprintf with /r/n outputs only one line Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-29 14:05 -0700
Re: fprintf with /r/n outputs only one line Bartc <bc@freeuk.com> - 2015-08-29 22:46 +0100
Re: fprintf with /r/n outputs only one line Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-29 15:59 -0700
Re: fprintf with /r/n outputs only one line Bartc <bc@freeuk.com> - 2015-08-30 00:31 +0100
Re: fprintf with /r/n outputs only one line Bartc <bc@freeuk.com> - 2015-08-30 10:25 +0100
Re: fprintf with /r/n outputs only one line Bartc <bc@freeuk.com> - 2015-08-30 13:22 +0100
Re: fprintf with /r/n outputs only one line Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-31 03:18 -0700
Re: fprintf with /r/n outputs only one line Bartc <bc@freeuk.com> - 2015-08-31 11:58 +0100
Re: fprintf with /r/n outputs only one line Bartc <bc@freeuk.com> - 2015-08-31 13:38 +0100
Re: fprintf with /r/n outputs only one line glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-09-04 04:18 +0000
Re: fprintf with /r/n outputs only one line "Charles Richmond" <numerist@aquaporin4.com> - 2015-09-04 05:09 -0500
Re: fprintf with /r/n outputs only one line Robert Wessel <robertwessel2@yahoo.com> - 2015-09-04 05:19 -0500
Re: fprintf with /r/n outputs only one line raltbos@xs4all.nl (Richard Bos) - 2015-09-04 16:33 +0000
Re: fprintf with /r/n outputs only one line Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-30 02:17 +0100
Re: fprintf with /r/n outputs only one line Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-29 23:43 -0700
Re: fprintf with /r/n outputs only one line Geoff <geoff@invalid.invalid> - 2015-08-30 11:47 -0700
Re: fprintf with /r/n outputs only one line Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-30 13:18 -0700
Re: fprintf with /r/n outputs only one line Geoff <geoff@invalid.invalid> - 2015-08-30 16:04 -0700
Re: fprintf with /r/n outputs only one line Ike Naar <ike@iceland.freeshell.org> - 2015-08-30 07:20 +0000
Re: fprintf with /r/n outputs only one line Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-06 15:17 -0700
Re: fprintf with /r/n outputs only one line Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-09-06 16:36 -0700
Re: fprintf with /r/n outputs only one line Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-07 23:19 -0700
Re: fprintf with /r/n outputs only one line Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-09-08 02:50 -0700
Re: fprintf with /r/n outputs only one line Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-30 02:14 +0100
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