Answer 2D7

long add2DArray( int nrows, int ncols, int x[nrows][ncols] )
{
  long sum = 0;
  int r, c;
  for ( r=0; r<nrows; r++ )
  {
    for ( c=0; c<ncols; c++ )
      sum += x[r][c];
  }
  return sum;  
}