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From: gbarker@mph.sm.ucl.ac.uk (Dr Gareth J. Barker)
Newsgroups: comp.sys.sun
Subject: Re: exit() and return() in a C program (SUMM
Keywords: Miscellaneous
Message-ID: <1990Aug14.232507.16557@rice.edu>
Date: 13 Aug 90 13:14:49 GMT
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X-Sun-Spots-Digest: Volume 9, Issue 304, message 3
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The answer to my question :

was that main is implicitely defined as returning an int (since I hadn't
defined it as anything else) and lint therefore wanted to se it return an
int at the end any path through the routine.  Since it doesn't know that
exit() never returns it give an error message when it 'drops off the end'
of the function.  The solution is either to change the code to:

		main()
		{
			exit(0);
			return(0);
		}

where the return() statement will never be reached but will keep lint
happy, or, more cleanly:

		main()
		{
			exit(0);
			/*NOTREACHED*/
		}

Thanks to:
kucharsk@com.solbourne  
cudcv@uk.ac.warwick.cu  
sanzgiri%flamingo.meta  
steve@com.taumet       
cgwst@edu.pitt.cis.uni
guy@com.auspex       
scl@edu.virginia.acc.s  
cs@com.sun.eng         
lwv27@EARN.CAS        
(David Moore)moore%ess
hue%island@com.sun    

Gareth J. Barker,
Institute of Neurology, Queen Square,
London, UK.

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