Date: Tue, 30 Oct 2001 11:35:13 -0600 From: Lucas Bergman <lucas@fivesight.com> To: Cliff Sarginson <cliff@raggedclown.net> Cc: Sam Suh <sam@bigstudios.com>, questions@freebsd.org Subject: Re: Question Message-ID: <15326.58577.644116.716803@apu.five.sight> In-Reply-To: <20011030175306.A6302@raggedclown.net> References: <3BDE7140.E1DA5ABB@in.ceeyes.com> <3BDEC1EE.672DCC9@bigstudios.com> <15326.53671.687708.44817@apu.five.sight> <20011030175306.A6302@raggedclown.net>
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Cliff Sarginson wrote:
> Lucas Bergman wrote:
> > Sam Suh wrote:
> > > venkatn wrote:
> > > > but the compiller is not supporting the getch(), as it shows an
> > > > error say UNDEFINED REFERENCE 'getch'/
> > >
> > > Hi, 'man 3 getch' reveals to me that you need to include <curses.h>.
> > > Have you included that?
> >
> > You're on the right track, but "undefined reference" is a linker
> > error; no include directive is going to fix it.
>
> Mmm, close, but not quite a cigar. The undefined reference could be
> because of a missing macro definition, which may be included in an
> include file.
I believe as long as you're using a C compiler that you would probably
get a diagnostic, but not an error, since having functions undeclared
and unprototyped is perfectly legal C, if arguably bad style. Indeed,
the program
int main(void) { char c = getch(); return 0; }
compiles fine, but I do get the diagnostic message
warning: implicit declaration of function `getch'
This even links against my copy of libncurses. OTOH, I think a C++
compiler can reject this program, but no guarantees on that one, since
I don't know C++ very well.
> I am not saying that this is the case with this problem. Just
> trying to maintain accuracy :)
Fair enough. Me too. :)
Lucas
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