From: "Lars Hansen" <lars DOT o DOT hansen AT gmx DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: several questions (symify, dynamic labels, cpu clock)
Date: Tue, 21 Jan 2003 20:37:15 +0100
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To: djgpp AT delorie DOT com
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> > 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();
>   ...
> }


I want to avoid any "if"s.

so

goto *dynapointer;
label1: do_some_stuff;
*dynapointer=&&label2;
label2: do_normal_stuff

but in order to make full use of it I need the address of label1 before I'm
there the first time (and it might also be necessary to set dynapointer to
label1 again at a later time).