C / C++ / MFC

class Node
{
public:

 ... some data ...

 std::vector<node*> Children;
};

void do_something_before(Node*) 
{ 
  ... 
} 

void do_something_after(Node*) 
{ 
  ... 
} 

// function to translate into an iterative one

void traverse(Node* node)
{
  do_something_before(node);

  for(int i=0; i<node->Children.size(); ++i )
    traverse(node->Children[i]);

  do_something_after(node);
}</node-></node*>