#ifndef NODE_H
#define NODE_H

#include <iostream>

#include "tree.h"

using namespace std;

//------------------------------------------------------

class Tree;

//------------------------------------------------------

class Node {
	friend class Tree;
	friend ostream &operator<<(ostream&, Node*);
public:
	Node(int=0);
private:
	int data;
	Node* left;
	Node* right;
};

//------------------------------------------------------

#endif