1. #ifndef ENHANCED_STACK_HPP
  2. #define ENHANCED_STACK_HPP
  3.  
  4. #include "stack.hpp"
  5.  
  6. class ENHANCED_STACK : public STACK
  7. {
  8.   public:
  9.     ENHANCED_STACK();
  10.     void Print_Stack();
  11.     void Clean();
  12.     void Copy(STACK & S1);
  13.     int Equal(STACK & S1);
  14.  
  15.   private:
  16.   protected:
  17. };
  18.  
  19. #endif