Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!husc6!linus!dartvax!eleazar.dartmouth.edu!earleh
From: earleh@eleazar.dartmouth.edu (Earle R. Horton)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Arrays of functions in THINK C
Keywords: Why does this not work?
Message-ID: <9651@dartvax.Dartmouth.EDU>
Date: 3 Aug 88 03:05:31 GMT
References: <2884@mit-amt.MEDIA.MIT.EDU>
Sender: news@dartvax.Dartmouth.EDU
Reply-To: earleh@eleazar.dartmouth.edu (Earle R. Horton)
Organization: Dartmouth College, Hanover, NH
Lines: 28

In article <2884@mit-amt.MEDIA.MIT.EDU> phil@mit-amt.MEDIA.MIT.EDU (Phil Sohn) writes:
>typedef int (*GEN)();
>
>int gen01();
>
>GEN gensub[10]= {NULL, gen01}
>
>gensub[1]();  <-  compiler produces an error here
>
>
>	Anyone see what I am doing wrong?  I believe it
>is a bug in THINK C  (including 3.0) because it works on
>Vaxes, HPs, Suns, and in MPW.

Try

(* gensub[1])();

I don't think it's a bug in Think.  I think Think is handling the
situation properly.  In the first form, you are attempting to call a
pointer to a function.  In the second form, you are calling the
function referenced by the pointer.  The reason the first form works
on "Vaxes, HPs, Suns, and in MPW" is rather obvious:  "What else could
I possibly mean here?"  K&R doesn't say anything about it.  Anybody
care to eleaborate about what ANSI says?

Mr. Spock!  This disk is damaged!  Do you want to initialize it?

Earle R. Horton.  H.B. 8000, Dartmouth College, Hanover, NH 03755