diff options
| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/Prog2/Codebeispiele/2_ch10/fig10_07/fig10_07.cpp | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/Prog2/Codebeispiele/2_ch10/fig10_07/fig10_07.cpp')
| -rw-r--r-- | Bachelor/Prog2/Codebeispiele/2_ch10/fig10_07/fig10_07.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
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. *
+ *************************************************************************/
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