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From: wallace@oldtmr.dec.com (Ray Wallace)
Newsgroups: comp.lang.c
Subject: Re: Passing 2-D Arrays of unknown size ?
Message-ID: <1387@engage.enet.dec.com>
Date: 20 Dec 89 20:04:57 GMT
Sender: news@engage.enet.dec.com
Organization: Digital Equipment Corporation
Lines: 29


In article <3180@uceng.UC.EDU>, mfinegan@uceng.UC.EDU (michael k finegan)
writes... 
>    Is there a method for passing/using multi-D arrays in subroutines,
>without specifying the column (fastest changing) dimension in advance ? No way

Your solution_func3() is what I would use with a slight modification to
illiminate the calculation drawback you mention...

solution_func3(array,rows,cols)
char *array;
int rows, cols;
{
    int i,j;

    for(i=0, i<rows, ++i)
        for(j=0, j<cols, ++j )
            some_operation(*array++);
  /*
   * Of course if you want to do some kind of random indexing then you still
   * end up with doing the calculation you stated "[i*cols + j]".
   */
}
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Ray Wallace		
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