int Lol(int num)
{
 if(num < 1)
  return 0;
 else
  return Lol(num-1) + num;
}

object * LoadObject(stream in,object * parent = NULL)
{
object * currentobject = new object;
currentobject->setparent(parent);
currentobject->load(in);

for( ... all childs of current object ... )
 LoadObject(in,currentobject);

return currentobject;
}