Date: Sat, 5 Sep 1998 21:56:43 -0400 (EDT) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: Charles Youse <cyouse@artemis.syncom.net> Cc: Dusk Auriel Sykotik <syko@sykotik.org>, chat@FreeBSD.ORG Subject: Re: Where can I find C Message-ID: <199809060156.VAA21373@khavrinen.lcs.mit.edu> In-Reply-To: <Pine.NEB.3.96.980905204054.25315A-100000@artemis.syncom.net> References: <Pine.LNX.3.95.980905200113.30275A-100000@vortex.starix.net> <Pine.NEB.3.96.980905204054.25315A-100000@artemis.syncom.net>
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<<On Sat, 5 Sep 1998 20:43:32 -0400 (EDT), Charles Youse <cyouse@artemis.syncom.net> said:
[Redirected to the correct list.]
> Nah, it'll draw a warning, perhaps .... but this is perfectly legal C.
>> You can't use printf(), you didn't include stdio.h :)
Mr. Whazisname is correct. Standard C does not permit variadic
functions to be called without a declaration in scope. The minimal
hello, world program in C would be:
------------------------------------
int printf(const char *, ...); /* supply correct prototype */
int
main(void) /* as a special exception, main is allowed to take no args */
{
printf("Hello, World!\n");
return 0; /* main MUST return a value if it returns at all */
}
------------------------------------
I don't recall whether a non-prototype declaration is permitted for
variadic functions. I think it is, but would not be surprised to see
non-prototype declarations dropped completely from C 99.
-GAWollman
--
Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu | O Siem / The fires of freedom
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick
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