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Re: What I've learned in comp.lang.c

From Michael S <already5chosen@yahoo.com>
Newsgroups comp.lang.c
Subject Re: What I've learned in comp.lang.c
Date 2024-02-08 13:26 +0200
Organization A noiseless patient Spider
Message-ID <20240208132657.00004a9a@yahoo.com> (permalink)
References (5 earlier) <upsrh5$qb8m$1@dont-email.me> <upuf0v$13gvv$1@dont-email.me> <upvcv5$1bcum$1@dont-email.me> <upvgp1$1bs8q$1@dont-email.me> <96OwN.308692$7sbb.3759@fx16.iad>

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On Wed, 07 Feb 2024 16:21:25 GMT
scott@slp53.sl.home (Scott Lurndal) wrote:

> Malcolm McLean <malcolm.arthur.mclean@gmail.com> writes:
> >On 07/02/2024 07:54, David Brown wrote:  
> >> On 07/02/2024 00:23, Lawrence D'Oliveiro wrote:  
> >>> On Tue, 6 Feb 2024 09:44:20 +0100, David Brown wrote:
> >>>  
> >>>> They reuse "temp" variables instead of making new ones.  
> >>>
> >>> I like to limit the scope of my temporary variables. In C, this
> >>> is as easy
> >>> as sticking a pair of braces around a few statements.  
> >> 
> >> Generally, you want to have the minimum practical scope for your
> >> local variables.  It's rare that you need to add braces just to
> >> make a scope for a variable - usually you have enough braces in
> >> loops or conditionals 
> >> - but it happens.
> >>   
> >The two common patterns are to give each variable the minimum scope,
> >or to decare all variables at the start of the function and give
> >them all function scope.
> >
> >The case for minimum scope is the same as the case for scope itself.
> >The variable is accessible where it is used and not elsewhere, which
> >makes it less likely it will be used in error, and means there are
> >fewer names to understand.  
> 
> And it means the compiler can re-use the local storage (if any was
> allocated) for subsequent minimal scope variables (or even same scope
> if the compiler knows the original variable is never used again),
> so long as the address of the variable isn't taken.

That's completely orthogonal to the scope of declaration, at least as
long as compiler is not completely idiotic.

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What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-05 01:09 +0000
  Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-05 05:58 +0000
    Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-04 22:49 -0800
      Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-05 07:03 +0000
        Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-04 23:51 -0800
          Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-04 23:52 -0800
            Re: What I've learned in comp.lang.c Jan van den Broek <balglaas@dds.nl> - 2024-02-05 08:36 +0000
    Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-05 18:23 +0200
    Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-05 18:32 +0200
      Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-05 20:53 +0100
        Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-05 20:53 +0000
          Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-06 09:44 +0100
            Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-06 01:03 -0800
            Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-06 13:41 +0200
              Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-06 13:08 +0100
            Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-06 23:23 +0000
              Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 08:54 +0100
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-07 08:59 +0000
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-07 10:47 +0000
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-07 11:04 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 14:21 +0100
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-07 14:24 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 21:30 +0100
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-07 15:36 +0000
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-07 18:05 +0000
                Re: What I've learned in comp.lang.c scott@slp53.sl.home (Scott Lurndal) - 2024-02-07 18:26 +0000
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-07 19:53 +0000
                Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-07 21:38 +0000
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-08 00:29 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 21:37 +0100
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-07 22:52 +0000
                Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-08 01:13 +0000
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-08 02:09 +0000
                Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-08 03:07 +0000
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-08 14:17 +0000
                Re: What I've learned in comp.lang.c Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-02-08 16:02 -0800
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-09 00:48 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-09 08:53 +0100
                Re: What I've learned in comp.lang.c Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-02-10 21:55 -0800
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-08 13:01 +0100
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-08 11:37 +0000
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-08 12:10 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-08 13:24 +0100
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-08 13:03 +0000
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-08 13:17 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-08 16:52 +0100
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-08 17:17 +0000
                Re: What I've learned in comp.lang.c Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-02-09 14:50 -0800
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-07 12:44 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 14:49 +0100
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-07 16:13 +0000
                Re: What I've learned in comp.lang.c Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-07 08:21 -0800
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 14:01 +0100
                Re: What I've learned in comp.lang.c Richard Harnden <richard.nospam@gmail.invalid> - 2024-02-07 13:21 +0000
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-07 13:42 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 16:17 +0100
                Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-07 21:34 +0000
                Re: What I've learned in comp.lang.c scott@slp53.sl.home (Scott Lurndal) - 2024-02-07 16:21 +0000
                Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-08 13:26 +0200
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-07 10:04 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 14:51 +0100
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-07 15:30 +0000
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-07 15:45 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 21:44 +0100
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-08 00:33 +0000
                Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-08 01:30 +0000
                Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-08 01:38 +0000
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-08 02:21 +0000
                Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-08 03:07 +0000
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-08 11:45 +0000
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-08 12:15 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-08 13:29 +0100
                Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-08 12:55 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-09 09:02 +0100
                Re: What I've learned in comp.lang.c scott@slp53.sl.home (Scott Lurndal) - 2024-02-08 16:09 +0000
                Re: What I've learned in comp.lang.c Richard Harnden <richard.nospam@gmail.invalid> - 2024-02-08 16:28 +0000
                Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-08 17:13 +0000
                Re: What I've learned in comp.lang.c Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-02-08 17:53 -0800
    Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-05 19:02 +0200
      Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-05 23:28 +0000
        Re: What I've learned in comp.lang.c Richard Harnden <richard.nospam@gmail.invalid> - 2024-02-05 23:40 +0000
        Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-06 01:46 +0200
          Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-06 09:54 +0100
        Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-05 16:03 -0800
          Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-05 16:06 -0800
        Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-06 09:50 +0100
          Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-06 01:01 -0800
          Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-06 23:24 +0000
            Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 08:56 +0100
              Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-07 12:09 +0200
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 15:03 +0100
              Re: What I've learned in comp.lang.c scott@slp53.sl.home (Scott Lurndal) - 2024-02-07 16:25 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 21:49 +0100
                Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-07 13:04 -0800
                Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-07 23:37 +0200
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-08 08:52 +0100
                Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-09 15:55 +0200
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-09 15:29 +0100
                Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-09 16:52 +0200
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-09 17:22 +0100
                Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-10 07:18 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-10 17:11 +0100
                Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-10 21:23 +0000
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-11 14:01 +0100
                Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-07 21:41 +0000
    Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-07 02:18 +0000
      Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-07 09:30 +0100
      Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-07 09:04 +0000
      Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-07 23:24 +0000
        Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-08 01:46 +0000
          Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-08 02:50 +0000
            Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-08 11:08 +0000
            Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-08 13:10 +0200
              Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-08 17:48 +0000
                Re: What I've learned in comp.lang.c Michael S <already5chosen@yahoo.com> - 2024-02-08 21:30 +0200
                Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-08 20:39 +0000
                Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-08 13:39 -0800
                Re: What I've learned in comp.lang.c Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-08 14:18 -0800
                Re: What I've learned in comp.lang.c gazelle@shell.xmission.com (Kenny McCormack) - 2024-02-08 22:29 +0000
                Re: What I've learned in comp.lang.c "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-08 14:43 -0800
                Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-09 09:12 +0100
  Re: What I've learned in comp.lang.c Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-02-04 23:36 -0800
    Re: What I've learned in comp.lang.c scott@slp53.sl.home (Scott Lurndal) - 2024-02-05 14:52 +0000
      Re: What I've learned in comp.lang.c gazelle@shell.xmission.com (Kenny McCormack) - 2024-02-05 22:58 +0000
    Re: What I've learned in comp.lang.c Jim Jackson <jj@franjam.org.uk> - 2024-02-05 18:01 +0000
  Re: What I've learned in comp.lang.c Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-05 08:29 +0000
    Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-07 01:35 +0000
      Re: What I've learned in comp.lang.c Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-07 02:26 +0000
        Re: What I've learned in comp.lang.c bart <bc@freeuk.com> - 2024-02-07 10:47 +0000
  Re: What I've learned in comp.lang.c Dan Purgert <dan@djph.net> - 2024-02-05 11:03 +0000
  Re: What I've learned in comp.lang.c David Brown <david.brown@hesbynett.no> - 2024-02-05 13:15 +0100
    Re: What I've learned in comp.lang.c Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-05 14:09 +0000
  Re: What I've learned in comp.lang.c Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-05 23:29 +0000

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