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From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.lang.c
Subject: Re: Return vs. exit in main() [WAS Re: "exit 0;"  - or -  "exit (0);" ?]
Message-ID: <5400@brl-smoke.ARPA>
Date: Fri, 21-Nov-86 17:45:41 EST
Article-I.D.: brl-smok.5400
Posted: Fri Nov 21 17:45:41 1986
Date-Received: Tue, 25-Nov-86 21:13:52 EST
References: <f1512@batcomputer.tn.cornell.edu> <6355@alice.UUCP> <1556@batcomputer.tn.cornell.edu> <2330@diamond.Diamond.BBN.COM>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Distribution: net
Organization: Ballistic Research Lab (BRL), APG, MD.
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In article <2330@diamond.Diamond.BBN.COM> mlandau@Diamond.BBN.COM (Matt Landau) writes:
>Does the most recent ANSI draft have anything to say on this subject?

Yes.  main() is an int-valued function; its return value is used the same
way as it would have been if termination were achieved by invoking exit()
with the same value as a parameter.  If you don't return anything, the
termination status is undefined, as one would expect.