From: loki AT nectar DOT com DOT au-remove (loki)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: A nice trap! (2)
Date: 3 Jun 98 01:22:55 GMT
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John M. Aldrich <fighteer AT cs DOT com> wrote:

>The problem is that most people who use don't use an integer return type
>for main seem to think that it's standard code because that's the way
>they were taught.

  True, that's a good point :)

>1) The return value is used as the program's exit code, and may be used
>by any program that invokes yours.

  I guess it depends; if I knew no other program would ever try to invoke
mine I might well declare main() as returning void, mostly so I didn't have
to bother writing a return at the bottom.  Call me lazy :)

>Thus, the shortest legal ANSI C program is as follows:

  Ah well, to be a little pedantic then we can probably shorten it further. 
After all, functions that do not explicitly declare a return type are
considered to be declared as returning int anyway.  Additionally, empty
parameters are permissible; IIRC, this means the function may be passed any
number and type of arguments, so it is _not_ the same as declaring void
(despite what someone else posted in another thread) since that of course
explicitly means no parameters. So our slightly shorter program is now:

main ()
{
   return 0;
}

  Further shortenings are possible (I suppose you could use K&R style
braces and chop off one whole line!) but I don't think it's a very
productive exercise to go any futher, heh.
  Of course, you can argue that it's poor style to have a function not
explicitly declare its return type, and I would agree.  Pretty much ditto
about the empty parameter list.


-- 
       loki
loki (at) nectar.com.au         http://puck.nether.net/~loki/
# Dare I disturb the universe?  You bet I do!