Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!wuarchive!uunet!aspect!dave
From: dave@aspect.UUCP (Dave Corcoran)
Newsgroups: comp.lang.c
Subject: Re: Variable number of arguments
Summary: suggestion,m4
Message-ID: <10114@aspect.UUCP>
Date: 20 May 91 16:01:34 GMT
References: <1991May13.210257.20240@cunixf.cc.columbia.edu>
Organization: Aspect Telecommunications, San Jose, Ca
Lines: 23

In article <1991May13.210257.20240@cunixf.cc.columbia.edu>, ta-dw30@cunixa.cc.columbia.edu (David Worenklein) writes:
> I know I can pull a variable number of arguments off of the stack using va_...
> but how do I know how many arguments are there? Is there any way to get the
> C compiler to push all the arguments and then push the number of (arguments,
> Thanks.

Email bounced so...

m4 can help if you want to pass the argument count as the first argument

run this through m4 (/usr/5bin/m4 if BSD):
--------------------8<--------------------
define(`numarg_',`$#,$*')
func(numarg_(asdf,qwer,wqer,s,dfa,fdsa,qwre,sdfa,f,qwer,ewrq,sfd))
func(numarg_(asdf,asd,f))
func(numarg_(qwer,"qwer asfd",&asdf,*vzxc))
func(numarg_("caveat:,commas,in,quotes,are,computed,in,count"))
--------------------8<--------------------
-- 
David Corcoran		      -@@
uunet!aspect!dave	        ~
Having the right to do something is not the same as being right in doing it.
					--  C.K. Chesterson