Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!dgp.toronto.edu!flaps
From: flaps@dgp.toronto.edu (Alan J Rosenthal)
Newsgroups: comp.lang.c
Subject: Re: pointers to functions
Message-ID: <1989Aug31.165703.13257@jarvis.csri.toronto.edu>
Date: 31 Aug 89 20:57:04 GMT
References: <1679@hydra.gatech.EDU> <9429@chinet.chi.il.us>
Lines: 13

john@chinet.chi.il.us (John Mundt) writes:
>If f holds the address of the start of the function, *f really doesn't
>have any meaning.  

True, but if f is a pointer to the function, which is what happens in C,
then *f is the function itself, just like if ip is a pointer to an int,
*ip is the int pointed to.  Pointers and addresses are different, and C
only has pointers.  (A pointer cannot be implemented by an address; it
requires additional type information (usually implicit).)

ajr

p.s. I know that pf(x) works, and I know why (followup avoidance tactic).