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+// Fig. 7.44: floor.cpp
+// Member-function definitions for class Floor.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#include "floor.h"     // Floor class definition
+#include "person.h"    // Person class definition
+#include "elevator.h"  // Elevator class definition
+#include "door.h"      // Door class definition
+
+// static constants that represent the floor numbers
+const int Floor::FLOOR1 = 1;
+const int Floor::FLOOR2 = 2;
+
+// constructor
+Floor::Floor(int number, Elevator &elevatorHandle ) 
+   : floorButton( number, elevatorHandle ), 
+     floorNumber( number ), 
+     elevatorRef( elevatorHandle ),
+     occupantPtr ( 0 ),
+     light( floorNumber )     
+{ 
+   cout << "floor " << floorNumber << " constructed" << endl;
+
+} // end Floor constructor
+
+// destructor
+Floor::~Floor() 
+{ 
+   delete occupantPtr;
+   cout << "floor " << floorNumber << " destructed" << endl;
+
+} // end ~Floor destructor
+
+// determine whether floor is occupied
+bool Floor::isOccupied() const 
+{
+   return ( occupantPtr != 0 ); 
+
+} // end function isOccupied
+
+// return this floor's number
+int Floor::getNumber() const 
+{ 
+   return floorNumber; 
+
+} // end function getNumber
+
+// person arrives on floor
+void Floor::personArrives( Person * const personPtr )
+{ 
+   occupantPtr = personPtr; 
+
+} // end function personArrives
+
+// notify floor that elevator has arrived
+Person *Floor::elevatorArrived()
+{
+   cout << "floor " << floorNumber 
+        << " resets its button" << endl;
+
+   floorButton.resetButton();
+   light.turnOn();
+
+   return occupantPtr;  
+
+} // end function elevatorArrived
+
+// tell floor that elevator is leaving
+void Floor::elevatorLeaving() 
+{ 
+   light.turnOff(); 
+
+} // end function elevatorLeaving
+
+// notifies floor that person is leaving
+void Floor::personBoardingElevator() 
+{ 
+   occupantPtr = 0;  // person no longer on floor
+
+} // end function personBoardingElevator
+
+/**************************************************************************
+ * (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.                     *
+ *************************************************************************/