A simple class hierarchy : Class Inheritance « Class Interface « C# / C Sharp

A simple class hierarchy

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/


// A simple class hierarchy. 
 
using System; 


 
public class Shapes { 
  public static void Main() { 
    Triangle t1 = new Triangle(); 
    Triangle t2 = new Triangle(); 
 
    t1.width = 4.0; 
    t1.height = 4.0; 
    t1.style = "isosceles"; 
 
    t2.width = 8.0; 
    t2.height = 12.0; 
    t2.style = "right"; 
 
    Console.WriteLine("Info for t1: "); 
    t1.showStyle(); 
    t1.showDim(); 
    Console.WriteLine("Area is " + t1.area()); 
 
    Console.WriteLine(); 
 
    Console.WriteLine("Info for t2: "); 
    t2.showStyle(); 
    t2.showDim(); 
    Console.WriteLine("Area is " + t2.area()); 
  } 
}

 
// A class for two-dimensional objects. 
public class TwoDShape { 
  public double width; 
  public double height; 
 
  public void showDim() { 
    Console.WriteLine("Width and height are " + 
                       width + " and " + height); 
  } 
} 
 
// Triangle is derived from TwoDShape. 
public class Triangle : TwoDShape { 
  public string style; // style of triangle 
   
  // Return area of triangle. 
  public double area() { 
    return width * height / 2; 
  } 
 
  // Display a triangle's style. 
  public void showStyle() { 
    Console.WriteLine("Triangle is " + style); 
  } 
}

1.	Inheritance 3
2.	Four layers of class hierarchy
3.	An example of inheritance-related name hiding
4.	Using base to overcome name hiding
5.	Call a hidden method
6.	A multilevel hierarchy 1
7.	Demonstrate when constructors are called
8.	illustrates inheritance
9.	Private field and public Property in inheritance
10.	Illustrates versioning
11.	Class Hierarchy test
12.	Class Hierarchy with two children class
13.	A base class reference can refer to a derived class object
14.	Pass a derived class reference to a base class reference
15.	a multilevel hierarchy
16.	Build a derived class of Vehicle for trucks

A simple class hierarchy : Class Inheritance « Class Interface « C# / C Sharp

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