From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001 From: Sven Eisenhauer Date: Fri, 10 Nov 2023 15:11:48 +0100 Subject: add new repo --- .../Codebeispiele/2_ch10/fig10_07/fig10_07.cpp | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Bachelor/Prog2/Codebeispiele/2_ch10/fig10_07/fig10_07.cpp (limited to 'Bachelor/Prog2/Codebeispiele/2_ch10/fig10_07/fig10_07.cpp') diff --git a/Bachelor/Prog2/Codebeispiele/2_ch10/fig10_07/fig10_07.cpp b/Bachelor/Prog2/Codebeispiele/2_ch10/fig10_07/fig10_07.cpp new file mode 100644 index 0000000..184ed32 --- /dev/null +++ b/Bachelor/Prog2/Codebeispiele/2_ch10/fig10_07/fig10_07.cpp @@ -0,0 +1,48 @@ +// Fig. 10.7: fig10_07.cpp +// Attempting to invoke derived-class-only member functions +// through a base-class pointer. +#include "point.h" // Point class definition +#include "circle.h" // Circle class definition + +int main() +{ + Point *pointPtr = 0; + Circle circle( 120, 89, 2.7 ); + + // aim base-class pointer at derived-class object + pointPtr = &circle; + + // invoke base-class member functions on derived-class + // object through base-class pointer + int x = pointPtr->getX(); + int y = pointPtr->getY(); + pointPtr->setX( 10 ); + pointPtr->setY( 10 ); + pointPtr->print(); + + // attempt to invoke derived-class-only member functions + // on derived-class object through base-class pointer + double radius = pointPtr->getRadius(); + pointPtr->setRadius( 33.33 ); + double diameter = pointPtr->getDiameter(); + double circumference = pointPtr->getCircumference(); + double area = pointPtr->getArea(); + + return 0; + +} // end main + +/************************************************************************** + * (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. * + *************************************************************************/ \ No newline at end of file -- cgit v1.2.3