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+// Fig. 6.23: fig06_23.cpp
+// Demonstrating a public member function that
+// returns a reference to a private data member.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+// include definition of class Time from time4.h
+#include "time4.h"
+
+int main()
+{
+   Time t;
+
+   // store in hourRef the reference returned by badSetHour
+   int &hourRef = t.badSetHour( 20 );
+
+   cout << "Hour before modification: " << hourRef;
+
+   // use hourRef to set invalid value in Time object t
+   hourRef = 30;  
+   
+   cout << "\nHour after modification: " << t.getHour();
+
+   // Dangerous: Function call that returns
+   // a reference can be used as an lvalue!
+   t.badSetHour( 12 ) = 74;
+
+   cout << "\n\n*********************************\n"
+        << "POOR PROGRAMMING PRACTICE!!!!!!!!\n"
+        << "badSetHour as an lvalue, Hour: "
+        << t.getHour()
+        << "\n*********************************" << endl;
+
+   return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2002 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.                     *
+ *************************************************************************/