Answer 2D12

<pre>
#include <stdio.h>
#include <stdlib.h>

#define NUMCOLS 7
#define NUMROWS 4
 
void initDiagonal( int nrows, int ncols, int x[nrows][ncols]  );
{
  int r,  c;
  
  for ( r=0; r<nrows; r++ )
    for ( c=r+1; c<ncols; c++ )
      if ( r==c )
        x[r][c] = 0;
      else if ( r>c )
        x[r][c] = 1;
      else
        x[r][c] = -1;
}