struct Node {
  double value;
  Node * next;
};

int count(Node * root) {
  int c = 0;
  Node * n = root;
  do {
    ++c;
  } while(n.next != 0);
  return c;
}

int main() {
  Node n;
  n.value = 100;
  Node m;
  m.value = 200;
  n.next = m;
  m.next = 0;
}



int count_pixels(const Image *i) {
}


Image im;

cout << count_pixels(&im);