NetNews Offline 2/NetNews Offline Volume 2.iso/news/comp/lang/c-part1/106

Internet Message Format | 1996-08-05 | 1.9 KB

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From: Lawrence Kirby <[e-mail]>
Newsgroups: comp.lang.c
Subject: Re: What's so different about 2-D arrays???
Date: Mon, 01 Jan 96 21:12:27 GMT
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References: <4c799b$[e-mail]> <4c8kdh$[e-mail]>
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In article <4c8kdh$[e-mail]>
           [e-mail](Pete) "Pete" writes:

>>Please read the FAQ. This will show you why 'int main (void)' is the
>correct
>>declaration for your particular program.
>
>As long as we're being so nit-picky, where in the FAQ does it say
>exactly that?  All I can find is "int main ()".

11.12:    Can I declare main() as void, to shut off these annoying "main
    returns no value" messages?

A:    No.  main() must be declared as returning an int, and as taking
    either zero or two arguments, of the appropriate types.  If
    you're calling exit() but still getting warnings, you may have
    to insert a redundant return statement (or use some kind of "not
    reached" directive, if available).

    Declaring a function as void does not merely shut off or
    rearrange warnings: it may also result in a different function
    call/return sequence, incompatible with what the caller (in
    main's case, the C run-time startup code) expects.

The difference between int main() and int main(void) is rather acedemic and
isn't an issue here. They mean the same thing but the ANSI standard
classes the former as an "obsolescent feature" which suggests that support
for it may be dropped in future revisions of the language.

--
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Lawrence Kirby | [e-mail]
Wilts, England | [e-mail]
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