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| 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_13_20/Fig10_20.cpp | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/Prog2/Codebeispiele/2_ch10/fig10_13_20/Fig10_20.cpp')
| -rw-r--r-- | Bachelor/Prog2/Codebeispiele/2_ch10/fig10_13_20/Fig10_20.cpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/Bachelor/Prog2/Codebeispiele/2_ch10/fig10_13_20/Fig10_20.cpp b/Bachelor/Prog2/Codebeispiele/2_ch10/fig10_13_20/Fig10_20.cpp new file mode 100644 index 0000000..2ce0553 --- /dev/null +++ b/Bachelor/Prog2/Codebeispiele/2_ch10/fig10_13_20/Fig10_20.cpp @@ -0,0 +1,120 @@ +// Fig. 10.20: fig10_20.cpp
+// Driver for shape, point, circle, cylinder hierarchy.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+using std::fixed;
+
+#include <iomanip>
+
+using std::setprecision;
+
+#include <vector>
+
+using std::vector;
+
+#include "shape.h" // Shape class definition
+#include "point.h" // Point class definition
+#include "circle.h" // Circle class definition
+#include "cylinder.h" // Cylinder class definition
+
+void virtualViaPointer( const Shape * );
+void virtualViaReference( const Shape & );
+
+int main()
+{
+ // set floating-point number format
+ cout << fixed << setprecision( 2 );
+
+ Point point( 7, 11 ); // create a Point
+ Circle circle( 22, 8, 3.5 ); // create a Circle
+ Cylinder cylinder( 10, 10, 3.3, 10 ); // create a Cylinder
+
+ cout << point.getName() << ": "; // static binding
+ point.print(); // static binding
+ cout << '\n';
+
+ cout << circle.getName() << ": "; // static binding
+ circle.print(); // static binding
+ cout << '\n';
+
+ cout << cylinder.getName() << ": "; // static binding
+ cylinder.print(); // static binding
+ cout << "\n\n";
+
+ // create vector of three base-class pointers
+ vector< Shape * > shapeVector( 3 );
+
+ // aim shapeVector[0] at derived-class Point object
+ shapeVector[ 0 ] = &point;
+
+ // aim shapeVector[1] at derived-class Circle object
+ shapeVector[ 1 ] = &circle;
+
+ // aim shapeVector[2] at derived-class Cylinder object
+ shapeVector[ 2 ] = &cylinder;
+
+ // loop through shapeVector and call virtualViaPointer
+ // to print the shape name, attributes, area and volume
+ // of each object using dynamic binding
+ cout << "\nVirtual function calls made off "
+ << "base-class pointers:\n\n";
+
+ for ( int i = 0; i < shapeVector.size(); i++ )
+ virtualViaPointer( shapeVector[ i ] );
+
+ // loop through shapeVector and call virtualViaReference
+ // to print the shape name, attributes, area and volume
+ // of each object using dynamic binding
+ cout << "\nVirtual function calls made off "
+ << "base-class references:\n\n";
+
+ for ( int j = 0; j < shapeVector.size(); j++ )
+ virtualViaReference( *shapeVector[ j ] );
+
+ return 0;
+
+} // end main
+
+// make virtual function calls off a base-class pointer
+// using dynamic binding
+void virtualViaPointer( const Shape *baseClassPtr )
+{
+ cout << baseClassPtr->getName() << ": ";
+
+ baseClassPtr->print();
+
+ cout << "\narea is " << baseClassPtr->getArea()
+ << "\nvolume is " << baseClassPtr->getVolume()
+ << "\n\n";
+
+} // end function virtualViaPointer
+
+// make virtual function calls off a base-class reference
+// using dynamic binding
+void virtualViaReference( const Shape &baseClassRef )
+{
+ cout << baseClassRef.getName() << ": ";
+
+ baseClassRef.print();
+
+ cout << "\narea is " << baseClassRef.getArea()
+ << "\nvolume is " << baseClassRef.getVolume() << "\n\n";
+
+} // end function virtualViaReference
+
+/**************************************************************************
+ * (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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