Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.c > #12398

Re: the loop control

From Kaz Kylheku <kaz@kylheku.com>
Newsgroups comp.lang.c
Subject Re: the loop control
Date 2011-10-31 19:30 +0000
Organization A noiseless patient Spider
Message-ID <20111031152454.835@kylheku.com> (permalink)
References <j8hrok$3cq$1@reader1.panix.com> <op.v35g1ubrlahckh@cantereyd> <j8miq2$kh4$1@reader1.panix.com>

Show all headers | View raw


On 2011-10-31, Joe keane <jgk@panix.com> wrote:
> Anyway readability is key; to me code like
>
>     ct = len;
>     fop = fob;
>     while (--ct >= 0)
>     {
> 	...(fop)
> 	fop++;
>     }
>
> is so idiomatic that it's easiest.

As pointed out upthread, it's an infinite loop should ct ever happen
to be unsigned. Learning disability?

C programmers who know what they are donig rarely use predecrement like this in
descending loops, because the counter decrements even in the case that the loop
guard fails and the body is not to be executed any more, which means that it
decrements one past zero.

Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread


Thread

the loop control jgk@panix.com (Joe keane) - 2011-10-29 21:38 +0000
  Re: the loop control Ian Collins <ian-news@hotmail.com> - 2011-10-30 10:48 +1300
  Re: the loop control Kaz Kylheku <kaz@kylheku.com> - 2011-10-29 22:10 +0000
    Re: the loop control jgk@panix.com (Joe keane) - 2011-10-31 15:21 +0000
      Re: the loop control James Kuyper <jameskuyper@verizon.net> - 2011-10-31 11:35 -0400
        Re: the loop control jgharston <jgh@arcade.demon.co.uk> - 2011-10-31 10:27 -0700
          Re: the loop control Seebs <usenet-nospam@seebs.net> - 2011-10-31 18:36 +0000
          Re: the loop control Robert Wessel <robertwessel2@yahoo.com> - 2011-10-31 13:49 -0500
          Re: the loop control Sjouke Burry <s@b> - 2011-10-31 18:49 +0000
          Re: the loop control James Kuyper <jameskuyper@verizon.net> - 2011-10-31 15:07 -0400
          Re: the loop control Keith Thompson <kst-u@mib.org> - 2011-10-31 13:56 -0700
      Re: the loop control Seebs <usenet-nospam@seebs.net> - 2011-10-31 17:18 +0000
        Re: the loop control Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-11-01 04:35 -0700
          Re: the loop control Seebs <usenet-nospam@seebs.net> - 2011-11-01 21:44 +0000
            Re: the loop control Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-11-02 01:16 -0700
      Re: the loop control Kaz Kylheku <kaz@kylheku.com> - 2011-10-31 19:23 +0000
        Re: the loop control jgk@panix.com (Joe keane) - 2011-11-02 04:47 +0000
      Re: the loop control Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-10-31 23:07 +0200
        Re: the loop control Ike Naar <ike@sverige.freeshell.org> - 2011-11-01 00:11 +0000
          Re: the loop control James Kuyper <jameskuyper@verizon.net> - 2011-10-31 22:01 -0400
            Re: the loop control Kaz Kylheku <kaz@kylheku.com> - 2011-11-01 02:51 +0000
              Re: the loop control James Kuyper <jameskuyper@verizon.net> - 2011-11-01 07:23 -0400
            Re: the loop control Ike Naar <ike@iceland.freeshell.org> - 2011-11-01 09:51 +0000
              Re: the loop control pete <pfiland@mindspring.com> - 2011-11-01 05:34 -0500
              Re: the loop control James Kuyper <jameskuyper@verizon.net> - 2011-11-01 07:30 -0400
              Re: the loop control James Kuyper <jameskuyper@verizon.net> - 2011-11-01 07:35 -0400
            Re: the loop control Hans Vlems <hvlems@freenet.de> - 2011-11-11 00:38 -0800
        Re: the loop control jgk@panix.com (Joe keane) - 2011-11-02 03:36 +0000
          Re: the loop control Ian Collins <ian-news@hotmail.com> - 2011-11-02 17:09 +1300
            Re: the loop control Keith Thompson <kst-u@mib.org> - 2011-11-02 03:56 -0700
      Re: the loop control Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-10-31 21:38 +0000
  Re: the loop control Acid Washed China Blue Jeans <chine.bleu@yahoo.com> - 2011-10-29 19:31 -0700
  Re: the loop control Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2011-10-29 23:11 -0600
  Re: the loop control "Philip Lantz" <prl@canterey.us> - 2011-10-29 22:47 -0700
    Re: the loop control jgk@panix.com (Joe keane) - 2011-10-31 16:36 +0000
      Re: the loop control Kaz Kylheku <kaz@kylheku.com> - 2011-10-31 19:30 +0000
        Re: the loop control blp@cs.stanford.edu (Ben Pfaff) - 2011-10-31 12:38 -0700
          Re: the loop control James Kuyper <jameskuyper@verizon.net> - 2011-10-31 15:51 -0400
            Re: the loop control blp@cs.stanford.edu (Ben Pfaff) - 2011-10-31 13:06 -0700
            Re: the loop control Keith Thompson <kst-u@mib.org> - 2011-10-31 14:17 -0700
              Re: the loop control Seebs <usenet-nospam@seebs.net> - 2011-11-01 21:44 +0000
            Re: the loop control Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-10-31 23:30 +0200
        Re: the loop control jgk@panix.com (Joe keane) - 2011-11-03 21:29 +0000
          Re: the loop control James Kuyper <jameskuyper@verizon.net> - 2011-11-03 18:00 -0400
          Re: the loop control Kaz Kylheku <kaz@kylheku.com> - 2011-11-04 00:43 +0000
            Re: the loop control jgk@panix.com (Joe keane) - 2011-11-11 02:24 +0000
      Re: the loop control Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-10-31 23:20 +0200
      Re: the loop control pete <pfiland@mindspring.com> - 2011-10-31 18:01 -0500
        Re: the loop control Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-11-02 01:20 +0200
  Re: the loop control 88888 Dihedral <dihedral88888@googlemail.com> - 2011-11-02 01:25 -0700

csiph-web