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// Fig. 9.23: cylinder.cpp
// Cylinder class inherits from class Circle4.
#include <iostream>
using std::cout;
#include "cylinder.h" // Cylinder class definition
// default constructor
Cylinder::Cylinder( int xValue, int yValue, double radiusValue,
double heightValue )
: Circle4( xValue, yValue, radiusValue )
{
setHeight( heightValue );
} // end Cylinder constructor
// set Cylinder's height
void Cylinder::setHeight( double heightValue )
{
height = ( heightValue < 0.0 ? 0.0 : heightValue );
} // end function setHeight
// get Cylinder's height
double Cylinder::getHeight() const
{
return height;
} // end function getHeight
// redefine Circle4 function getArea to calculate Cylinder area
double Cylinder::getArea() const
{
return 2 * Circle4::getArea() +
getCircumference() * getHeight();
} // end function getArea
// calculate Cylinder volume
double Cylinder::getVolume() const
{
return Circle4::getArea() * getHeight();
} // end function getVolume
// output Cylinder object
void Cylinder::print() const
{
Circle4::print();
cout << "; Height = " << getHeight();
} // end function print
/**************************************************************************
* (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. *
*************************************************************************/
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