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| From | Bartc <bc@freeuk.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: I need to vent some steam |
| Date | 2015-03-06 10:41 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <mdc08d$5mu$1@dont-email.me> (permalink) |
| References | <20150305170109.221d04fe@geostat.dk> <jrjifah6uj9qlqsu758t9mg54odkq82528@4ax.com> |
On 06/03/2015 07:14, Geoff wrote:
> Actually, it's a very interesting function. It is a very minimalist
> implementation of a zero-filled, right-justified fixed-width numeric
> to character conversion field that seems to have no equivalent in the
> standard library functions. It's only deficiency seems to be a
> complete lack of documentation or comments about it's contract of
> usage.
>
> Assume we have an airport with a kiosk with flight arrival departure
> information and we'd like to keep all the flight numbers as 4 digit
> fixed width fields after the two-letter airline code. Let's also
> assume the buffer is properly prepared before it's used:
>
> #include <stdio.h>
> #include <string.h>
>
> char *pint(char *buf, int len, int val) {
> int dval;
>
> for (len--; len >= 0; len--) {
> dval = val % 10;
> val -= dval;
> buf[len] = (char)('0' + dval);
> val /= 10;
> }
> return buf;
> }
>
> int main(void) {
> char buf[5] = {'1','1','1','1','\0'};
> size_t len;
>
> len = sizeof(buf) - 1 ;
> pint(buf, len, 42);
> printf("Galactic Airlines GA%s\n", buf);
> pint(buf, len, 0xa);
> printf("Hexadecimal Air HA%s\n", buf);
> return 0;
> }
The bigger question is why use C for such an application, when there are
so many more apt languages to do this stuff.
But even in C, what is wrong with:
printf("Galactic Airlines GA%04d\n", 42);
--
Bartc
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I need to vent some steam Anders Wegge Keller <wegge@geostat.dk> - 2015-03-05 17:01 +0100
Re: I need to vent some steam Morris Dovey <mrdovey@iedu.com> - 2015-03-05 10:32 -0600
Re: I need to vent some steam Richard Heathfield <rjh@cpax.org.uk> - 2015-03-05 17:04 +0000
Re: I need to vent some steam Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-05 17:42 +0000
Re: I need to vent some steam glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-03-05 19:16 +0000
Re: I need to vent some steam jacob navia <jacob@spamsink.net> - 2015-03-05 20:47 +0100
Re: I need to vent some steam Anders Wegge Keller <wegge@geostat.dk> - 2015-03-05 20:52 +0100
Re: I need to vent some steam Kaz Kylheku <kaz@kylheku.com> - 2015-03-05 22:20 +0000
Re: I need to vent some steam Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-05 17:51 +0000
Re: I need to vent some steam Kaz Kylheku <kaz@kylheku.com> - 2015-03-05 22:20 +0000
Re: I need to vent some steam Geoff <geoff@invalid.invalid> - 2015-03-05 23:14 -0800
Re: I need to vent some steam Bartc <bc@freeuk.com> - 2015-03-06 10:41 +0000
Re: I need to vent some steam Geoff <geoff@invalid.invalid> - 2015-03-06 08:03 -0800
Re: I need to vent some steam Bartc <bc@freeuk.com> - 2015-03-06 16:50 +0000
Re: I need to vent some steam Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-06 15:32 -0800
Re: I need to vent some steam Öö Tiib <ootiib@hot.ee> - 2015-03-07 07:59 -0800
Re: I need to vent some steam Geoff <geoff@invalid.invalid> - 2015-03-07 16:22 -0800
Re: I need to vent some steam James Kuyper <jameskuyper@verizon.net> - 2015-03-07 19:45 -0500
Re: I need to vent some steam Geoff <geoff@invalid.invalid> - 2015-03-07 17:21 -0800
Re: I need to vent some steam Bartc <bc@freeuk.com> - 2015-03-08 10:29 +0000
Re: I need to vent some steam Geoff <geoff@invalid.invalid> - 2015-03-08 13:37 -0700
Re: I need to vent some steam Geoff <geoff@invalid.invalid> - 2015-03-07 16:20 -0800
Re: I need to vent some steam Anders Wegge Keller <wegge@geostat.dk> - 2015-03-06 17:54 +0100
Re: I need to vent some steam Geoff <geoff@invalid.invalid> - 2015-03-06 09:58 -0800
Re: I need to vent some steam Morris Dovey <mrdovey@iedu.com> - 2015-03-07 02:29 -0600
Re: I need to vent some steam Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-07 11:01 +0000
Re: I need to vent some steam Tim Rentsch <txr@alumni.caltech.edu> - 2015-03-24 10:46 -0700
Re: I need to vent some steam Richard Damon <Richard@Damon-Family.org> - 2015-03-06 08:34 -0500
Re: I need to vent some steam Les Cargill <lcargill99@comcast.com> - 2015-03-06 08:17 -0600
Re: I need to vent some steam Keith Thompson <kst-u@mib.org> - 2015-03-06 08:02 -0800
Re: I need to vent some steam Richard Damon <Richard@Damon-Family.org> - 2015-03-06 22:38 -0500
Re: I need to vent some steam Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-06 15:44 -0800
Re: I need to vent some steam Ian Collins <ian-news@hotmail.com> - 2015-03-07 13:35 +1300
Re: I need to vent some steam Ian Collins <ian-news@hotmail.com> - 2015-03-07 07:42 +1300
Re: I need to vent some steam raltbos@xs4all.nl (Richard Bos) - 2015-03-06 22:51 +0000
Re: I need to vent some steam Michael Angelo Ravera <maravera@prodigy.net> - 2015-03-06 16:48 -0800
Re: I need to vent some steam Xcott Craver <xcottcraver@gmail.com> - 2015-03-09 08:52 -0700
Re: I need to vent some steam Anders Wegge Keller <wegge@geostat.dk> - 2015-03-09 21:11 +0100
Re: I need to vent some steam Kaz Kylheku <kaz@kylheku.com> - 2015-03-09 20:16 +0000
Re: I need to vent some steam Anders Wegge Keller <wegge@geostat.dk> - 2015-03-09 21:38 +0100
Re: I need to vent some steam Kaz Kylheku <kaz@kylheku.com> - 2015-03-09 20:54 +0000
Re: I need to vent some steam David Brown <david.brown@hesbynett.no> - 2015-03-10 09:02 +0100
Re: I need to vent some steam Robert Wessel <robertwessel2@yahoo.com> - 2015-03-10 05:34 -0500
Re: I need to vent some steam Robert Wessel <robertwessel2@yahoo.com> - 2015-03-09 19:15 -0500
Re: I need to vent some steam Keith Thompson <kst-u@mib.org> - 2015-03-10 07:55 -0700
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