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// Fig. 17.17: treenode.h
// Template TreeNode class definition.
#ifndef TREENODE_H
#define TREENODE_H
// forward declaration of class Tree
template< class NODETYPE > class Tree;
template< class NODETYPE >
class TreeNode {
friend class Tree< NODETYPE >;
public:
// constructor
TreeNode( const NODETYPE &d )
: leftPtr( 0 ),
data( d ),
rightPtr( 0 )
{
// empty body
} // end TreeNode constructor
// return copy of node's data
NODETYPE getData() const
{
return data;
} // end getData function
private:
TreeNode< NODETYPE > *leftPtr; // pointer to left subtree
NODETYPE data;
TreeNode< NODETYPE > *rightPtr; // pointer to right subtree
}; // end class TreeNode
#endif
/**************************************************************************
* (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice *
* Hall. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/
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