Binary trees: Write C++ code for the overloaded assignment operator method for a binary tree:

Binary_tree & operator = (const Binary_tree &original);

template <class Entry>

struct Binary_node {

// data members:

Entry data;

Binary_node *left;

Binary_node *right;

// constructors:

Binary_node( );

Binary_node(const Entry &x);

};

template <class Entry>

class Binary_tree {

public:

Binary_tree( );

Binary_tree & operator = (const Binary_tree &original);

protected:

// Add auxiliary function prototypes here.

Binary_node *root;

};