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diff --git a/Bachelor/Prog2/Codebeispiele/1_ch09/Fig09_10_11/CircleTest/circle2.cpp b/Bachelor/Prog2/Codebeispiele/1_ch09/Fig09_10_11/CircleTest/circle2.cpp
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+++ b/Bachelor/Prog2/Codebeispiele/1_ch09/Fig09_10_11/CircleTest/circle2.cpp
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+// Fig. 9.11: circle2.cpp
+// Circle2 class member-function definitions.
+#include <iostream>  
+
+using std::cout;
+
+#include "circle2.h"   // Circle2 class definition
+
+// default constructor
+Circle2::Circle2( int xValue, int yValue, double radiusValue )
+{
+   x = xValue;
+   y = yValue;
+   setRadius( radiusValue );
+
+} // end Circle2 constructor
+
+// set radius 
+void Circle2::setRadius( double radiusValue )
+{
+   radius = ( radiusValue < 0.0 ? 0.0 : radiusValue );
+
+} // end function setRadius
+
+// return radius 
+double Circle2::getRadius() const
+{
+   return radius;
+
+} // end function getRadius
+
+// calculate and return diameter
+double Circle2::getDiameter() const
+{
+   return 2 * radius;
+
+} // end function getDiameter
+
+// calculate and return circumference
+double Circle2::getCircumference() const
+{
+   return 3.14159 * getDiameter();
+
+} // end function getCircumference
+
+// calculate and return area
+double Circle2::getArea() const
+{
+   return 3.14159 * radius * radius;
+
+} // end function getArea
+
+// output Circle2 object
+void Circle2::print() const
+{
+   cout << "Center = [" << x << ", " << y << ']'
+        << "; Radius = " << radius;
+
+} // 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.                     *
+ *************************************************************************/
+\ No newline at end of file