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diff --git a/Bachelor/Prog1/examples/elevator/light.cpp b/Bachelor/Prog1/examples/elevator/light.cpp
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+++ b/Bachelor/Prog1/examples/elevator/light.cpp
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+// Fig. 7.34: light.cpp
+// Member-function definitions for class Light.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#include "light.h"  // Light class definition
+
+// constructor
+Light::Light( int number ) 
+   : on( false ), 
+     floorNumber( number )
+{ 
+   cout << "floor " << floorNumber << " light constructed" 
+        << endl;
+
+} // end Light constructor
+
+// destuctor
+Light::~Light() 
+{ 
+   cout << "floor " << floorNumber 
+        << " light destructed" << endl;
+
+} // end ~Light destructor
+
+// turn light on
+void Light::turnOn() 
+{ 
+   if ( !on ) {  // if light not on, turn it on
+      on = true; 
+      cout << "floor " << floorNumber 
+           << " light turns on" << endl;
+
+   } // end if
+
+} // end function turnOn
+
+// turn light off
+void Light::turnOff() 
+{ 
+   if ( on ) {  // if light is on, turn it off
+      on = false; 
+      cout << "floor " << floorNumber 
+           << " light turns off" << endl;
+
+   } // end if
+
+} // end function turnOff
+
+/**************************************************************************
+ * (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.                     *
+ *************************************************************************/