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| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: printf format specifier changes |
| Date | 2015-07-07 20:42 -0700 |
| Organization | None to speak of |
| Message-ID | <lnwpyb9uy4.fsf@kst-u.example.com> (permalink) |
| References | <d9147e9f-77b1-435a-b037-24041fd6974a@googlegroups.com> <mnebi4$p4v$1@dont-email.me> <mni35p$efa$2@dont-email.me> |
Les Cargill <lcargill99@comcast.com> writes:
> Bartc wrote:
>> On 06/07/2015 17:04, Rick C. Hodgin wrote:
>>> In 2015, what suggestions would you have for changing anything about
>>> the format specifiers used in the printf functions? Leave them as
>>> they are? Or change this or that about them?
>>
>> In 2015, the whole notion of having to tell a compiler what it already
>> knows - the type of the values it's printing - is outdated.
>>
>
> No, it is not.
>
> Example 1:
>
> char *s = something();
>
> printf(":%s: 0x%08x\n",s,(int)s);
>
> Every. Single. Attempt. To improve on this. Fails. Repeatedly.
%x requires an unsigned int, not an int. But I would write that as:
printf(":%s: %p\n", s, (void*)s);
(It can be argued that the cast is not needed in this case, but it's
easier to be consisten.)
[...]
--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
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printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-06 09:04 -0700
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-06 17:50 +0100
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-06 11:34 -0700
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-06 19:47 +0100
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-06 19:53 +0100
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-06 11:57 -0700
Re: printf format specifier changes "James Harris" <james.harris.1@gmail.com> - 2015-09-06 10:53 +0100
Re: printf format specifier changes Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-09-06 04:21 -0700
Re: printf format specifier changes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-09-06 13:41 +0100
Re: printf format specifier changes Richard Heathfield <rjh@cpax.org.uk> - 2015-07-06 19:44 +0100
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-06 22:14 +0100
Re: printf format specifier changes Robert Wessel <robertwessel2@yahoo.com> - 2015-07-06 22:43 -0500
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-06 23:01 -0700
Re: printf format specifier changes glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-07-07 06:43 +0000
Re: printf format specifier changes Phil Carmody <pc+usenet@asdf.org> - 2015-07-09 10:52 +0300
Re: printf format specifier changes Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 09:26 +0100
Re: printf format specifier changes Phil Carmody <pc+usenet@asdf.org> - 2015-07-12 12:56 +0300
Re: printf format specifier changes Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-12 06:12 -0700
Re: printf format specifier changes Rosario19 <Ros@invalid.invalid> - 2015-07-07 10:22 +0200
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-07 10:10 +0100
Re: printf format specifier changes Philip Lantz <prl@canterey.us> - 2015-07-07 00:54 -0700
Re: printf format specifier changes Nobody <nobody@nowhere.invalid> - 2015-07-07 15:08 +0100
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-07 16:12 +0100
Re: printf format specifier changes raltbos@xs4all.nl (Richard Bos) - 2015-07-09 10:34 +0000
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-09 12:25 +0100
Re: printf format specifier changes Phil Carmody <pc+usenet@asdf.org> - 2015-07-12 13:02 +0300
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-12 11:23 +0100
Re: printf format specifier changes <william@wilbur.25thandClement.com> - 2015-07-07 11:50 -0700
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-07 12:14 -0700
Re: printf format specifier changes Les Cargill <lcargill99@comcast.com> - 2015-07-07 21:52 -0500
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-07 20:42 -0700
Re: printf format specifier changes Phil Carmody <pc+usenet@asdf.org> - 2015-07-09 11:12 +0300
Re: printf format specifier changes Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-09 05:03 -0700
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-09 13:10 -0500
Re: printf format specifier changes James Kuyper <jameskuyper@verizon.net> - 2015-07-09 08:58 -0400
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-09 08:10 -0700
Re: printf format specifier changes Phil Carmody <pc+usenet@asdf.org> - 2015-07-12 12:58 +0300
Re: printf format specifier changes James Kuyper <jameskuyper@verizon.net> - 2015-07-12 12:57 -0400
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-12 11:14 -0700
Re: printf format specifier changes gazelle@shell.xmission.com (Kenny McCormack) - 2015-07-12 18:26 +0000
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-08 13:09 +0100
Re: printf format specifier changes James Kuyper <jameskuyper@verizon.net> - 2015-07-08 08:10 -0400
Re: printf format specifier changes Les Cargill <lcargill99@comcast.com> - 2015-07-08 08:12 -0500
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-08 08:38 -0700
Re: printf format specifier changes James Kuyper <jameskuyper@verizon.net> - 2015-07-08 12:00 -0400
Re: printf format specifier changes Les Cargill <lcargill99@comcast.com> - 2015-07-08 17:20 -0500
Re: printf format specifier changes Phil Carmody <pc+usenet@asdf.org> - 2015-07-09 11:08 +0300
Re: printf format specifier changes Phil Carmody <pc+usenet@asdf.org> - 2015-07-08 20:30 +0300
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-08 18:56 +0100
Re: printf format specifier changes gordonb.lmwiv@burditt.org (Gordon Burditt) - 2015-07-09 11:09 -0500
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-09 14:05 -0500
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-08 11:27 -0700
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-08 15:07 -0500
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-06 23:39 -0500
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-07 10:19 +0100
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-07 07:57 -0500
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-07 14:15 +0100
Re: printf format specifier changes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-07 14:46 +0100
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-07 09:37 -0500
Re: printf format specifier changes Phil Carmody <pc+usenet@asdf.org> - 2015-07-09 11:24 +0300
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-09 09:55 -0500
Re: printf format specifier changes <william@wilbur.25thandClement.com> - 2015-07-09 11:53 -0700
Re: printf format specifier changes <william@wilbur.25thandClement.com> - 2015-07-09 13:48 -0700
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-09 17:01 -0500
Re: printf format specifier changes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-07 10:59 +0100
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-07 07:48 -0500
Re: printf format specifier changes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-07 14:30 +0100
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-07 10:05 -0500
Re: printf format specifier changes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-07 23:16 +0100
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-07 20:29 -0500
Re: printf format specifier changes Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-08 00:43 -0700
Re: printf format specifier changes Robert Wessel <robertwessel2@yahoo.com> - 2015-07-09 02:29 -0500
Re: printf format specifier changes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-09 10:34 +0100
Re: printf format specifier changes BGB <cr88192@hotmail.com> - 2015-07-09 09:35 -0500
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-07 08:37 -0700
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-07 08:45 -0700
Re: printf format specifier changes <william@wilbur.25thandClement.com> - 2015-07-07 12:12 -0700
Re: printf format specifier changes pooja deshpande <namitadeshpande25@gmail.com> - 2015-07-09 09:29 -0700
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-09 09:34 -0700
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-09 09:59 -0700
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-09 22:33 +0100
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-09 15:17 -0700
Re: printf format specifier changes glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-07-10 00:30 +0000
Re: printf format specifier changes Reinhardt Behm <rbehm@hushmail.com> - 2015-07-10 09:17 +0800
Re: printf format specifier changes David Kleinecke <dkleinecke@gmail.com> - 2015-07-09 10:02 -0700
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-09 10:19 -0700
Re: printf format specifier changes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-09 21:50 +0100
Re: printf format specifier changes Keith Thompson <kst-u@mib.org> - 2015-07-09 15:05 -0700
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-09 15:09 -0700
Re: printf format specifier changes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-10 00:28 +0100
Re: printf format specifier changes raltbos@xs4all.nl (Richard Bos) - 2015-07-13 20:39 +0000
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-09 15:07 -0700
Re: printf format specifier changes Bartc <bc@freeuk.com> - 2015-07-09 23:16 +0100
Re: printf format specifier changes "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-09 15:25 -0700
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