From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: several questions (symify, dynamic labels, cpu clock)
Date: Tue, 21 Jan 2003 17:01:34 +0000
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hello.

Lars Hansen wrote:
> 
> > > > 2. how can I get the address of a dynamic label which is in a
> > > > function I am not in?
> > >
> > > Don't worry --- it wouldn't be useful for anything, even if you could.
> > > Dynamic labels are not meant as a substitute for longjmp() or plain
> > > function calls.
> 
> And sometimes I need code just to execute the first time but that code is
> part of code in a function which itself may or may not be called during
> program execution (or other such 1st time only not cases).

Why not split the "first time called" code out into a separate function and
then call that from multiple places?

void
foo (void)
{
  static int foo_inited = 0;

  if (foo_inited)
    return;

  foo_inited++;
  ...
}

void
function_that_may_or_may_not_be_called (void)
{
  foo();
  ...
}

int
main (void)
{
  foo();
  ...
}

Regards,

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]