Use interfaces to implement multiple inheritance. - CSharp Custom Type

CSharp examples for Custom Type:interface

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Description

Use interfaces to implement multiple inheritance.

Demo Code

using System;//www. j  a v  a 2s  . c  o m
class Shape {
   public void setWidth(int w) {
      width = w;
   }
   public void setHeight(int h) {
      height = h;
   }
   protected int width;
   protected int height;
}
// Base class PaintCost
public interface PaintCost {
   int getCost(int area);
}
// Derived class
class Rectangle : Shape, PaintCost {
   public int getArea() {
      return (width * height);
   }
   public int getCost(int area) {
      return area * 70;
   }
}
class MainClass {
   static void Main(string[] args) {
      Rectangle Rect = new Rectangle();
      int area;
      Rect.setWidth(5);
      Rect.setHeight(7);
      area = Rect.getArea();
      Console.WriteLine("Total area: {0}",  Rect.getArea());
      Console.WriteLine("Total paint cost: ${0}" , Rect.getCost(area));
   }
}

Result


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