/*
find out if neighbours are on or off
add up the number of neighbours that are on
*/
neighbours(int** grid, int x, int y)
{
  int alive = 0, dead = 0, i, j;
  for(j=y-1; j<=y+1; j++)
  {
    for(i=x-1; i<=x+1; i++)
    {
      if(i != miny && grid[i][j]==1)
        alive++;
      else
        dead++;
    }
    if(i != minx && grid[i][j]==1)
      alive++;
    else
      dead++;
  }
  return(alive);
}