**fig3_47.txt**

/* 1*/	static const Default_Size = 100;
/* 2*/	template <class Element_Type>
/* 3*/	class Stack
/* 4*/	{
/* 5*/	  private:
/* 6*/	    // The stack is array based.

/* 7*/	    unsigned int Full_Stack;
/* 8*/	    int Top_Of_Stack;
/* 9*/	    Element_Type *Stack_Array;

/*10*/	    Stack( const Stack & Value );

/*11*/	  public:
/*12*/	    // Constructors.
/*13*/	    Stack( unsigned int Max_Size = Default_Size );

/*14*/	    // Destructor.
/*15*/	    ~Stack( ) { delete [ ] Stack_Array; }

/*16*/	    // Operators.
/*17*/	    const Stack & operator = ( const Stack & Value );

/*18*/	    // Member functions.
/*19*/	    void Push( const Element_Type & X );
/*20*/	    void Pop( );
/*21*/	    const Element_Type & Pop_And_Top( );
/*22*/	    const Element_Type & Top( ) const;
/*23*/	    void Make_Empty( );
/*24*/	    int Is_Empty( ) const
/*25*/	        { return Top_Of_Stack == -1; }
/*26*/	    int Is_Full( )  const
/*27*/	        { return Top_Of_Stack == Full_Stack - 1; }
/*28*/	};