Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!ulysses!cjc
From: cjc@ulysses.homer.nj.att.com (Chris Calabrese[mav])
Newsgroups: comp.lang.c
Subject: Re: C pointers
Summary: pointer to array vs array of pointers
Message-ID: <11216@ulysses.homer.nj.att.com>
Date: 13 Feb 89 20:37:33 GMT
References: <1707@shaffer.UUCP> <3374@xyzzy.UUCP>
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 31

In article <3374@xyzzy.UUCP>, throopw@xyzzy.UUCP (Wayne A. Throop) writes:
| > jcrowe@shaffer.UUCP (Joe Crowe)
| > I have a structure which contains among
| > other things a pointer to an array of structures declared as follows:
| > typedef struct XYZ
| > { ...
| >   struct diag_cmd    (*p_cmd_blk)[];
| > ... } t_xyz;
| > I try various methods of accessing a structure member one of the array
| > of structures I am getting compiler errors.  I have tried most combinations
| > but with no luck.  Any ideas??
| 
| Um.... maybe I'm being naive myself, but did you try the obvious one,
| the one you declared it with?  That is,
| 
|      (*t_xyz.p_cmd_blk)[N]

Um...isn't (*p_cmd_blk)[] an array of pointers, not a pointer to an array?
try *(p_cmd_blk[]).

K&R (old) Page 110 says that int *b[10] is an array of 10 pointers to int;
therefore, struct diag_cmd *p_cmd_blk[] should be an array of pointers to
struct diag_cmd.  Somehow I doubt that the parens around *p_cmd_blk are
grouping things differently.

Ayway, there's always struct diag_cmd **p_cmnd_blk.
-- 
Name:			Christopher J. Calabrese
Brain loaned to:	AT&T Bell Laboratories, Murray Hill, NJ
att!ulysses!cjc		cjc@ulysses.att.com
Obligatory Quote:	``Now, where DID I put that bagel?''