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+// Fig. 9.33: button.h
+// Definition for class Button.
+#ifndef BUTTON_H
+#define BUTTON_H
+
+class Elevator;                 // forward declaration
+
+class Button {
+
+public:
+   Button( Elevator & );        // constructor
+   ~Button();                   // destructor
+   void pressButton();          // sets button on
+   void resetButton();          // resets button off
+
+protected:
+   
+	// reference to button's elevator
+   Elevator &elevatorRef;
+
+private:
+   bool pressed;                // state of button
+
+}; // end class Button
+
+#endif // BUTTON_H
+
+/**************************************************************************
+ * (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.                     *
+ *************************************************************************/