From: Glynn Clements <glynn@gclements.plus.com>
To: Ankit Jain <ankitjain1580@yahoo.com>
Cc: linux-c-programming@vger.kernel.org
Subject: Re: variable length function
Date: Wed, 15 Jun 2005 12:33:24 +0100 [thread overview]
Message-ID: <17072.4612.493709.339833@gargle.gargle.HOWL> (raw)
In-Reply-To: <20050615083610.15622.qmail@web52909.mail.yahoo.com>
Ankit Jain wrote:
> Well then i am just trying to clear my concept again.
>
> main()
> {
>
> printf("This is main");
>
> }
>
> now this simple function main according to this
> discussion will return a int value.......Am i
> right....
Correct.
> but is it true with any compiler?
It's true for any compiler which supports pre-ANSI C (aka "K&R C").
ANSI C requires the return type to be specified.
> another thing........... if it returns a int value and
> we have not returned any value explicitly.........then
> what is the value returned ....as far as i know its a
> non-zero value. but then what will that mean.....?
It's an unspecified value. It could be any "int" value, including
zero. As there is only one zero but many more non-zero values, it
probably won't be zero, but it isn't guaranteed.
Hopefully the compiler will issue a warning in this situation.
--
Glynn Clements <glynn@gclements.plus.com>
next prev parent reply other threads:[~2005-06-15 11:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-14 17:43 variable length function Ankit Jain
2005-06-14 19:14 ` Steve Graegert
2005-06-15 2:23 ` Glynn Clements
2005-06-15 6:33 ` Steve Graegert
2005-06-15 8:36 ` Ankit Jain
2005-06-15 9:08 ` Steve Graegert
2005-06-15 11:33 ` Glynn Clements [this message]
2005-06-15 15:59 ` Ankit Jain
2005-06-15 16:26 ` Steve Graegert
2005-06-15 17:22 ` Ron Michael Khu
2005-06-16 2:31 ` Rajkumar Andrews
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