Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!samsung!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.unix.wizards
Subject: Re: Why isn't argv[argc]==(char *)0 ?
Message-ID: <2651@auspex.auspex.com>
Date: 20 Nov 89 21:35:41 GMT
References: <547.nlhp3@oracle.nl> <1989Nov16.012439.6405@virtech.uucp>
Reply-To: guy@auspex.auspex.com (Guy Harris)
Organization: Auspex Systems, Santa Clara
Lines: 7

>argv has always had an endmarker.  Older versions had the convention 
>that argv[argc] == -1.

*Much* older versions; the first version I saw with argv[argc] == 0 was
V7, from which all modern AT&T-UNIX-derived versions are derived. 
(I.e., unless you have to deal with an archaic UNIX or a Mutant UNIX
From Hell, you can count on argv[argc] == 0.)