Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!seismo!gatech!hao!ames!ptsfa!hoptoad!academ!killer!jfh
From: jfh@killer.UUCP (John Haugh)
Newsgroups: comp.sys.ibm.pc,comp.lang.c
Subject: Re: Assigning to Pointers
Message-ID: <857@killer.UUCP>
Date: Wed, 6-May-87 10:57:32 EDT
Article-I.D.: killer.857
Posted: Wed May  6 10:57:32 1987
Date-Received: Sun, 10-May-87 11:46:09 EDT
References: <3537@vrdxhq.UUCP>
Sender: usenet@killer.UUCP
Organization: The Unix(tm) Connection, Dallas, Texas
Lines: 38
Summary: Parenthesis help
Xref: mnetor comp.sys.ibm.pc:3925 comp.lang.c:2127

In article <3537@vrdxhq.UUCP>, tom@vrdxhq.UUCP (Tom Welsh) writes:
> 
> This may be a dumb question, but could someone please explain
> to me how I assign an absolute address to a pointer to an array?
> 
> I'm trying to overlay various structures and arrays at different
> times on top of the physical page frame in EMM.
> 
> I'm using MSC 4.0
> 
> I want to do the following :
> 
> 
> int *aa[];
This is not a pointer to an array.  This is an array of pointers.  So,
the assignment
> aa = 0x50000;
doesn't make much sense.  If you want a pointer to an array, you could
try
int	**aa;
which works nicely, since the [] is really not all that needed (flame
retardant statement).  If you REALLY want a pointer to an array, how
about
int	*(aa[]);
The parenthesis come in real handy at times, for example (small lesson in
C to follow :-) when you can't figure out how to declare a 'something' with
a weird shape.  My weakness is pointers to functions -
	int	foo ();		/* this is a function */
	int	*foo ();	/* this is a function RETURNING a pointer */
	int	*(foo ());	/* pointer to first function */
I won't even bother with POINTER to FUNCTION returning POINTER to FUNCTION
returning an integer (the return value of signal() is one of these).

- John.

Disclaimer:
	I don't have the slightest idea what I am talking about.  I can't
	handle these problems either.