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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. *
*************************************************************************/
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