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Path: utzoo!mnetor!seismo!husc6!think!ames!sdcsvax!nosc!cod!murphys
From: murphys@cod.UUCP (Steven P. Murphy)
Newsgroups: comp.lang.c
Subject: Two dimensional arrays in C
Message-ID: <733@cod.UUCP>
Date: Mon, 22-Jun-87 20:18:53 EDT
Article-I.D.: cod.733
Posted: Mon Jun 22 20:18:53 1987
Date-Received: Wed, 24-Jun-87 00:38:43 EDT
Organization: Naval Ocean Systems Center, San Diego
Lines: 61
Keywords: ?



The following example is what I would like to be able to do. Is it possible ?

I tried something like this twice but it didn't work either time, though 
it be from my inexperience with C.
  


#define ROWS1     500
#define COLUMNS1  30

#define ROWS2     400
#define COLUMNS2  20

main()
{
static double data1[ROWS][COLUMNS];
static double data2[ROWS][COLUMNS];

int n, m;

n1 = 300;
m1 = 15;
n2 = 200;
m2 = 18;
  .
  .
  .
matrix_stuff(n1, m1, data1, ROWS1, COLUMNS1);
  .
  .
  .
matrix_stuff(n2, m2, data2, ROWS2, COLUMNS2);
  .
  .
  .
}              /*   end  of  main   */



matrix_stuff(a, b, array, x, y);

int a, b, x, y;
double array[x][y];

{
int i, j;
   .
   .
   .
for(i = 0;i <= a;i++)                  /* step through the rows */
   for(j = 0;j <= b;j++)               /* step through the columns */
       {
         operate on the part of the
         matrix "array" that was used in main
       }
   .
   .
   .
}              /*   end  of  matrix_stuff   */