Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!motcsd!mcdcup!mcdchg!marcal!odgate!mike
From: mike@odgate.odesta.com (Mike J. Kelly)
Newsgroups: comp.lang.c
Subject: Re: Think C: dynamic 2d array allocation
Keywords: Think C, dynamic allocation
Message-ID: <1991Apr25.205726.21860@odgate.odesta.com>
Date: 25 Apr 91 20:57:26 GMT
References: <frost.672455128@watop>
Organization: Odesta Corporation, Northbrook IL.
Lines: 18

In article <frost.672455128@watop> frost@watop.nosc.mil (Richard Frost) writes:
>I am trying to dynamically allocate space for a 2d array USING Think C 4.0
>(on a Macintosh IIci).  Here's what I've tried:
>
>------------------------
>#define	max_el	128
>#define	max_az	2048
>
>int		el, az;
>unsigned int	**image;	
>
>	**image = (unsigned int **) malloc(max_el * sizeof(unsigned int *));

	^^ this deferences an undefined pointer.  **image is of type
	unsigned int, but you're assigning a pointer to pointer value to
	it.  What I think you want is:

	image = (unsigned int **) malloc(max_el * sizeof(unsigned int *));