On Wed, 13 Dec 1995, Alastair J Neil wrote:
> Tel Janin Aellinsar wrote:
> >
> > On Tue, 12 Dec 1995, Alastair J Neil wrote:
> >
> > > thus spake d hall
> > >
> > >
> > > >Michael> I don't know if this works, but even if it does it's not the best
> > > >Michael> way. Try something like
> > > >
> > > >it does work with GCC, since it's smart enough to implicitly typecast.
> > > >
> > > >Michael> ch->player.height = ch->player.height * 3 / 4;
> > > >
> > > >this might save the work of typecasting, but it varies based upon the
> > > >platform and compiler.
> > >
> > > why should this vary from platfom and compiler? The precedence of
> > > operators is defined in the ansi standard.
> > >
> >
> > And since when has any C compiler followed completely the ANSI standard?
> >
> > Most have the option of turning a lot on, but I don't think even gcc,
> > which is pretty standardized, goes all-out ANSI, even on request...
> >
>
> Well if your compiler purports to be an ANSI compiler and supports some
> other operator presednce then it is broken and you should complain
> to the vendor. Do you want to claim that because some compilers are
> broken you can't write ansi complient code?
>
No, I want to claim that some compilers support "extensions" that you
have to shut off to get anything even remotely ANSI-complaint. Of
course, there is the occasional broken compiler, too. From what BCC
says, and I mostly agree, there are four style: Kerighan and Ritchie,
however their names are spelled; ANSI C; UNIX C; and "everything
else." K&R C is not, AFAIK, ANSI C, and UNIX C sure as hell ain't ANSI
C. That isn't bad, because the ANSI C standard doesn't include some
things that it should.
> I'll admit that vendors tend to vary in how they handle "undefined"
> behaviour and yes you will run into problems if you get in the habit
> of passing null pointers to strcmp etc. because the DEC compiler let you.
>
Well, I've never used a DEC compiler, but using pointers under DOS can
sure get messy unless you're careful or use a 32-bit compiler.
___________________________________________________________________________
icarus@Crocker.COM http://www.crocker.com/~icarus
Berserker Dragon -=={UDIC}==- Ultima Dragons, Internet Chapter
Lord Eric P. McCoy IV Knights of the Cosmos
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