Re: Who owns the variable in my header file ?

Date	2012-10-04 09:24 +0100
From	lipska the kat <lipskathekat@yahoo.co.uk>
Newsgroups	comp.lang.c
Subject	Re: Who owns the variable in my header file ?
References	<EK-dnVoFlczbHfHNnZ2dnUVZ8hidnZ2d@bt.com> <k4iel5$633$3@blue-new.rahul.net>
Message-ID	<SOOdnetOC-Uz2vDNnZ2dnUVZ8hudnZ2d@bt.com> (permalink)

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On 03/10/12 23:36, Edward A. Falk wrote:
> In article<EK-dnVoFlczbHfHNnZ2dnUVZ8hidnZ2d@bt.com>,
> lipska the kat<lipskathekat@yahoo.co.uk>  wrote:
>> Hi
>>
>> I have the following program
>> distributed over 4 files

[snip]

>
> So add "int bar = 1;" to your foo.h and then compile fooget into a binary.
> In Unix, you can give the command "nm fooget.o" to see all the symbols
> associated with fooget:
>
>    0000000000000000 D bar
>    0000000000000004 C foo
>    0000000000000000 T fooget

Oh very nice

[lipska@sandbox externs (master)]$ nm main.o
0000000000000004 C foo
                  U fooget
                  U fooinc
                  U fooset
0000000000000000 T main
                  U printf

Thanks, I didn't know about nm, I'll try man nm then different versions 
of foobar and see what the results are

Hours of fun.

[snip]

> Now, a couple of semi-off-topic points:
>
> You should do
>
>    #include "foo.h"
>
> instead of
>
>    #include<foo.h>
>
> The<>  form is for system header files.  My compiler (gcc on Linux) barfed
> on the includes until I fixed them.  I don't know how you got it to compile
> on yours unless you used '-I." or something.
>
> As other posters have mentioned, you really should use "extern" in your
> declarations.

Thanks for this, I get the #include thing now.
I'm going to refactor the foo get/set/inc program and see what I can 
discover

Thanks for taking the time to reply

lipska

-- 
Lipska the Kat©: Troll hunter, sandbox destroyer
and farscape dreamer of Aeryn Sun

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Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-03 19:13 +0100
  Re: Who owns the variable in my header file ? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-10-03 15:05 -0400
    Re: Who owns the variable in my header file ? pacman@kosh.dhis.org (Alan Curry) - 2012-10-03 19:17 +0000
      Re: Who owns the variable in my header file ? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-10-03 15:55 -0400
    Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-03 20:59 +0100
      Re: Who owns the variable in my header file ? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-10-03 16:32 -0400
        Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-04 08:50 +0100
          Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-04 01:30 -0700
            Re: Who owns the variable in my header file ? Angel <angel+news@spamcop.net> - 2012-10-04 10:17 +0000
            Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-04 12:02 +0100
              Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-04 16:20 -0700
                Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-05 08:44 +0100
                Re: Who owns the variable in my header file ? Chicken McNuggets <chicken@mcnuggets.com> - 2012-10-07 16:48 +0100
          Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-04 07:13 -0400
      Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-04 00:34 -0400
        Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-04 09:02 +0100
          Re: Who owns the variable in my header file ? David Brown <david@westcontrol.removethisbit.com> - 2012-10-04 10:14 +0200
          Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-04 08:30 -0400
            Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-04 14:18 +0100
            Re: Who owns the variable in my header file ? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-10-06 02:30 -0700
              Re: Who owns the variable in my header file ? Les Cargill <lcargill99@comcast.com> - 2012-10-06 08:01 -0500
              Re: Who owns the variable in my header file ? Richard Damon <news.x.richarddamon@xoxy.net> - 2012-10-06 21:30 -0400
                Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-07 11:40 +0100
                Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-07 10:56 -0400
                Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-07 21:26 +0100
                Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-07 19:58 -0400
                Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-07 11:47 -0700
                Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-07 21:53 +0100
                Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-07 20:04 -0400
                Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-08 02:14 +0100
                Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-07 21:47 -0400
                Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-08 00:33 -0700
                Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-08 11:13 +0100
                Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-08 07:40 -0400
                Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-08 13:13 +0100
                Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-08 10:08 -0400
                Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-08 16:20 +0100
                Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-08 12:45 -0400
                Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-08 12:29 -0700
                Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-08 22:28 +0100
                Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-08 15:47 -0700
                Re: Who owns the variable in my header file ? Richard Damon <news.x.richarddamon@xoxy.net> - 2012-10-07 21:16 -0400
          Re: Who owns the variable in my header file ? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2012-10-04 08:35 -0600
          Re: Who owns the variable in my header file ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-10-04 22:31 +0100
            Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-05 08:58 +0100
        Re: Who owns the variable in my header file ? gordonb.mhaw9@burditt.org (Gordon Burditt) - 2012-10-06 20:19 -0500
          Re: Who owns the variable in my header file ? Ian Collins <ian-news@hotmail.com> - 2012-10-07 15:19 +1300
          Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-07 18:22 +0100
            Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-07 14:38 -0400
      Re: Who owns the variable in my header file ? Kaz Kylheku <kaz@kylheku.com> - 2012-10-04 05:14 +0000
  Re: Who owns the variable in my header file ? Kaz Kylheku <kaz@kylheku.com> - 2012-10-03 19:40 +0000
  Re: Who owns the variable in my header file ? Ike Naar <ike@sverige.freeshell.org> - 2012-10-03 19:52 +0000
  Re: Who owns the variable in my header file ? falk@rahul.net (Edward A. Falk) - 2012-10-03 22:36 +0000
    Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-03 16:21 -0700
      Re: Who owns the variable in my header file ? falk@rahul.net (Edward A. Falk) - 2012-10-04 19:01 +0000
      Re: Who owns the variable in my header file ? David Thompson <dave.thompson2@verizon.net> - 2012-10-11 03:09 -0400
        Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-11 13:30 -0700
    Re: Who owns the variable in my header file ? Kaz Kylheku <kaz@kylheku.com> - 2012-10-04 01:43 +0000
    Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-04 09:24 +0100
  Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-04 11:23 +0100
    Re: Who owns the variable in my header file ? David Brown <david@westcontrol.removethisbit.com> - 2012-10-04 13:26 +0200
      Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-04 15:52 +0100
        Re: Who owns the variable in my header file ? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-10-04 11:40 -0400
          Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-04 17:00 +0100
        Re: Who owns the variable in my header file ? hormelfree@gmail.com - 2012-10-04 17:15 -0700
          Re: Who owns the variable in my header file ? Ike Naar <ike@iceland.freeshell.org> - 2012-10-05 06:51 +0000
            Re: Who owns the variable in my header file ? David Brown <david@westcontrol.removethisbit.com> - 2012-10-05 09:35 +0200
          Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-05 09:11 +0100
            Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-05 08:04 -0400
    Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-04 08:43 -0400
    Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-04 16:08 -0700
      Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-05 09:27 +0100
        Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-05 02:16 -0700
        Re: Who owns the variable in my header file ? Angel <angel+news@spamcop.net> - 2012-10-05 11:38 +0000
          Re: Who owns the variable in my header file ? Nobody <nobody@nowhere.com> - 2012-10-05 16:13 +0100
            Re: Who owns the variable in my header file ? Angel <angel+news@spamcop.net> - 2012-10-05 16:26 +0000
  Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-08 19:02 +0100
    Re: Who owns the variable in my header file ? James Kuyper <jameskuyper@verizon.net> - 2012-10-08 14:29 -0400
      Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-08 20:15 +0100
      Re: Who owns the variable in my header file ? Keith Thompson <kst-u@mib.org> - 2012-10-08 14:04 -0700
    Re: Who owns the variable in my header file ? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2012-10-08 22:47 -0600
      Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-09 09:04 +0100
        Re: Who owns the variable in my header file ? "BartC" <bc@freeuk.com> - 2012-10-09 10:30 +0100
          Re: Who owns the variable in my header file ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-10-09 11:48 +0100

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