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<b>Data Structures and Algorithms 
with Object-Oriented Design Patterns in C++</b><br>
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<H3><A NAME="SECTION0010632000000000000000">Member Functions</A></H3>
<P>
Since the <tt>GeneralTree</tt> class is derived from the <tt>Tree</tt> base class,
its interface comprises all of the public interfaces of the base classes.
Furthermore, two member functions are added to the inherited interface--<tt>AttachSubtree</tt>, and <tt>DetachSubtree</tt>.
<P>
Since the <tt>GeneralTree</tt> class is a concrete class
derived from the an abstract base class,
it must provide implementations for all of the member functions
declared as pure virtual functions in the base class.
In the interest of brevity,
the declarations of these functions have been elided
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