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Groups > comp.lang.c > #151122

Re: Ways to avoid global variables

From Spiros Bousbouras <spibou@gmail.com>
Newsgroups comp.lang.c
Subject Re: Ways to avoid global variables
Message-ID <hai46oRQo9Gu4hMXqH@bongo-ra.co> (permalink)
References <r6c5ie$5b9$1@dont-email.me> <r6ddj4$dvu$1@dont-email.me> <r6er3n$6le$1@dont-email.me> <ch88ItrMgKg0uu64vp@bongo-ra.co> <e46183e0-cbd4-4ec0-a2b0-495584dd3a6b@googlegroups.com>
Organization virginmedia.com
Date 2020-04-06 10:16 +0000

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On Mon, 6 Apr 2020 03:03:02 -0700 (PDT)
Malcolm McLean <malcolm.arthur.mclean@gmail.com> wrote:
> On Monday, 6 April 2020 10:25:24 UTC+1, Spiros Bousbouras  wrote:
> > 
> > > I would say without /static/ keyword.
> > 
> > Seems like a reasonable definition to me and the kind of thing I would
> > understand intuitively as a global variable.
> >
> Say we've got this
> 
> static int numberbase = 10;
> 
> void setnumberbase(int base)
> {
>    if(base < 2)
>      numberbase = 2;
>    else if(base > 16)
>      numberbase = 16;
>    else
>      numberbase = base;
> }
> 
> int getnumberbase(void)
> {
>    return numberbase;
> }
> 
> Our variable is protected - it can't go out of range. But it's 
> globally visible. Anyone who includes our header can set the 
> numberbase for the whole program.

Function definitions should not go into headers. So you would put
in a header

void setnumberbase(int) ;
int getnumberbase(void) ;

and  #include  this in files which need to access  numberbase .So
what's the problem , what point were you trying to make ?

-- 
vlaho.ninja/prog

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Thread

Ways to avoid global variables Mehdi Amini <atorrses@gmail.com> - 2020-04-05 13:10 +0430
  Re: Ways to avoid global variables Mehdi Amini <atorrses@gmail.com> - 2020-04-05 13:23 +0430
  Re: Ways to avoid global variables felix@palmen-it.de (Felix Palmen) - 2020-04-05 11:11 +0200
  Re: Ways to avoid global variables Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-04-05 02:34 -0700
  Re: Ways to avoid global variables James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-05 10:48 -0400
    Re: Ways to avoid global variables James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-05 11:43 -0400
      Re: Ways to avoid global variables James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-05 16:49 -0400
      Re: Ways to avoid global variables Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-04-05 16:12 -0700
    Re: Ways to avoid global variables James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-05 11:49 -0400
      Re: Ways to avoid global variables Mehdi Amini <atorrses@gmail.com> - 2020-04-06 14:11 +0430
        Re: Ways to avoid global variables Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-04-06 12:08 +0100
  Re: Ways to avoid global variables David Brown <david.brown@hesbynett.no> - 2020-04-05 22:03 +0200
    Re: Ways to avoid global variables James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-05 16:53 -0400
      Re: Ways to avoid global variables Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-04-05 14:11 -0700
      Ice cream (Was: Ways to avoid global variables) gazelle@shell.xmission.com (Kenny McCormack) - 2020-04-06 06:45 +0000
      Re: Ways to avoid global variables David Brown <david.brown@hesbynett.no> - 2020-04-06 09:19 +0200
    Re: Ways to avoid global variables Mehdi Amini <atorrses@gmail.com> - 2020-04-06 13:30 +0430
      Re: Ways to avoid global variables Spiros Bousbouras <spibou@gmail.com> - 2020-04-06 09:25 +0000
        Re: Ways to avoid global variables Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-04-06 03:03 -0700
          Re: Ways to avoid global variables Spiros Bousbouras <spibou@gmail.com> - 2020-04-06 10:16 +0000
            Re: Ways to avoid global variables Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-04-06 03:21 -0700
              Re: Ways to avoid global variables Spiros Bousbouras <spibou@gmail.com> - 2020-04-06 10:50 +0000
              Re: Ways to avoid global variables David Brown <david.brown@hesbynett.no> - 2020-04-06 13:46 +0200
  Re: Ways to avoid global variables scott@slp53.sl.home (Scott Lurndal) - 2020-04-06 18:05 +0000
    Re: Ways to avoid global variables Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-04-06 20:37 +0100

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