364 Object-Oriented Programming: (Vps web hosting) Inheritance Chapter 9 1 //
364 Object-Oriented Programming: Inheritance Chapter 9 1 // Fig. 9.13: Circle4.cs 2 // Circle4 class that inherits from class Point3. 3 4 using System; 6 // Circle4 class definition inherits from Point3 7 public class Circle4 : Point3 8 { 9 private double radius; 11 // default constructor 12 public Circle4() 13 { 14 // implicit call to Point constructor occurs here } 16 17 // constructor 18 public Circle4( int xValue, int yValue, double radiusValue ) 19 : base( xValue, yValue ) { 21 Radius = radiusValue; 22 } 23 24 // property Radius public double Radius 26 { 27 get 28 { 29 return radius; } 31 32 set 33 { 34 if ( value >= 0 ) // validation needed radius = value; 36 } 37 38 } // end property Radius 39 // calculate Circle diameter 41 public double Diameter() 42 { 43 return Radius * 2; // use property Radius 44 } 46 // calculate Circle circumference 47 public double Circumference() 48 { 49 return Math.PI * Diameter(); } 51 Fig. 9.13 Fig. 9.13Fig. 9.FiFi13g. 9.13g. 9.13Circle4class that inherits from class Point3, which does not provide protecteddata (Part 1 of 2.).
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