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From: ken@turtlevax.UUCP (Ken Turkowski)
Newsgroups: net.lang.c
Subject: Re: Passing Multidimensional Arrays
Message-ID: <985@turtlevax.UUCP>
Date: Sun, 8-Dec-85 22:30:52 EST
Article-I.D.: turtleva.985
Posted: Sun Dec  8 22:30:52 1985
Date-Received: Tue, 10-Dec-85 07:08:53 EST
References: <138@brl-tgr.ARPA> <365@codas.UUCP>
Reply-To: ken@turtlevax.UUCP (Ken Turkowski)
Organization: CIMLINC, Inc. @ Menlo Park, CA
Lines: 23

In article <365@codas.UUCP> mikel@codas.UUCP (Mikel Manitius) writes:
>> I have an application where I want to pass a 2D array to a subroutine.
>> The data does not easily avail itself to being converted to a 1D array
>> of structures.  How can one access the array in the subroutine???
>
>How about this:
>#define		X	100
>#define		Y	100
>struct	x a[Y][X];
>subrout(i, j, a)
>int	i; int	j; struct x *a[];
>{
>	...a[j][i]...
>}
>And use i and j as boundary limits.

Unfortunately, this simplistic approach doesn't work because the offset
of a[3][4] from &a[0][0] is not the same when a is declared as a[5][5]
versus a[50][50].
-- 
Ken Turkowski @ CIMLINC, Menlo Park, CA
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