Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site hocda.UUCP
Path: utzoo!linus!philabs!seismo!harpo!eagle!mhuxl!houxm!hocda!54394gt
From: 54394gt@hocda.UUCP (G.TOMASEVICH)
Newsgroups: net.unix-wizards
Subject: NULL vs 0
Message-ID: <345@hocda.UUCP>
Date: Wed, 18-Jan-84 13:38:05 EST
Article-I.D.: hocda.345
Posted: Wed Jan 18 13:38:05 1984
Date-Received: Thu, 19-Jan-84 05:31:06 EST
Organization: Bell Labs, Holmdel
Lines: 5

Why all this fuss about NULL vs 0?  Just define a set of NUL's:
#define INUL	(int*)0
#define CNUL	(char*)0
#define FNUL	(struct foo*)0
and so on, whatever you need.