/*
C#: The Complete Reference 
by Herbert Schildt 

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


// Demonstrate an overloaded constructor. 
 
using System; 
 
class MyClass {  
  public int x;  
  
  public MyClass() { 
    Console.WriteLine("Inside MyClass()."); 
    x = 0; 
  } 
 
  public MyClass(int i) {  
    Console.WriteLine("Inside MyClass(int)."); 
    x = i;  
  } 
 
  public MyClass(double d) { 
    Console.WriteLine("Inside MyClass(double)."); 
    x = (int) d; 
  } 
 
  public MyClass(int i, int j) { 
    Console.WriteLine("Inside MyClass(int, int)."); 
    x = i * j; 
  }    
}    
    
public class OverloadConsDemo {    
  public static void Main() {    
    MyClass t1 = new MyClass();  
    MyClass t2 = new MyClass(88);  
    MyClass t3 = new MyClass(17.23);  
    MyClass t4 = new MyClass(2, 4);  
  
    Console.WriteLine("t1.x: " + t1.x); 
    Console.WriteLine("t2.x: " + t2.x); 
    Console.WriteLine("t3.x: " + t3.x); 
    Console.WriteLine("t4.x: " + t4.x); 
  }    
}


           
          

   

/*
C#: The Complete Reference 
by Herbert Schildt 

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


// Add more constructors to TwoDShape. 
 
using System; 
 
class TwoDShape { 
  double pri_width;  // private 
  double pri_height; // private  
 
  // Default constructor. 
  public TwoDShape() { 
    width = height = 0.0; 
  } 
 
  // Constructor for TwoDShape. 
  public TwoDShape(double w, double h) { 
    width = w; 
    height = h; 
  } 
 
  // Construct object with equal width and height. 
  public TwoDShape(double x) { 
    width = height = x; 
  } 
 
  // Properties for width and height. 
  public double width { 
     get { return pri_width; } 
     set { pri_width = value; } 
  } 
 
  public double height { 
     get { return pri_height; } 
     set { pri_height = value; } 
  } 
 
  public void showDim() { 
    Console.WriteLine("Width and height are " + 
                       width + " and " + height); 
  } 
} 
 
// A derived class of TwoDShape for triangles. 
class Triangle : TwoDShape { 
  string style; // private 
   
  /* A default constructor. This automatically invokes 
     the default constructor of TwoDShape. */ 
  public Triangle() { 
    style = "null"; 
  } 
 
  // Constructor that takes three arguments. 
  public Triangle(string s, double w, double h) : base(w, h) { 
    style = s;  
  } 
 
  // Construct an isosceles triangle. 
  public Triangle(double x) : base(x) { 
    style = "isosceles";  
  } 
 
  // Return area of triangle. 
  public double area() { 
    return width * height / 2; 
  } 
 
  // Display a triangle's style. 
  public void showStyle() { 
    Console.WriteLine("Triangle is " + style); 
  } 
} 
 
public class Shapes5 { 
  public static void Main() { 
    Triangle t1 = new Triangle(); 
    Triangle t2 = new Triangle("right", 8.0, 12.0); 
    Triangle t3 = new Triangle(4.0); 
 
    t1 = t2; 
 
    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()); 
 
    Console.WriteLine(); 
 
    Console.WriteLine("Info for t3: "); 
    t3.showStyle(); 
    t3.showDim(); 
    Console.WriteLine("Area is " + t3.area()); 
 
    Console.WriteLine(); 
  } 
}


           
          

   

/*
C#: The Complete Reference 
by Herbert Schildt 

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


// Add constructors to TwoDShape. 
 
using System; 
 
// A class for two-dimensional objects. 
class TwoDShape { 
  double pri_width;  // private 
  double pri_height; // private  
 
  // Constructor for TwoDShape. 
  public TwoDShape(double w, double h) { 
    width = w; 
    height = h; 
  } 
 
  // properties for width and height. 
  public double width { 
     get { return pri_width; } 
     set { pri_width = value; } 
  } 
 
  public double height { 
     get { return pri_height; } 
     set { pri_height = value; } 
  } 
 
  public void showDim() { 
    Console.WriteLine("Width and height are " + 
                       width + " and " + height); 
  } 
} 
 
 // A derived class of TwoDShape for triangles. 
class Triangle : TwoDShape { 
  string style; // private 
   
  // Call the base class constructor. 
  public Triangle(string s, double w, double h) : base(w, h) { 
    style = s;  
  } 
 
  // Return area of triangle. 
  public double area() { 
    return width * height / 2; 
  } 
 
  // Display a triangle's style. 
  public void showStyle() { 
    Console.WriteLine("Triangle is " + style); 
  } 
} 
 
public class Shapes4 { 
  public static void Main() { 
    Triangle t1 = new Triangle("isosceles", 4.0, 4.0); 
    Triangle t2 = new Triangle("right", 8.0, 12.0); 
 
    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()); 
  } 
}


           
          

   

/*
C#: The Complete Reference 
by Herbert Schildt 

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


// Add a constructor to Triangle. 
 
using System; 
 
// A class for two-dimensional objects. 
class TwoDShape { 
  double pri_width;  // private 
  double pri_height; // private  
 
  // properties for width and height. 
  public double width { 
     get { return pri_width; } 
     set { pri_width = value; } 
  } 
 
  public double height { 
     get { return pri_height; } 
     set { pri_height = value; } 
  } 
 
  public void showDim() { 
    Console.WriteLine("Width and height are " + 
                       width + " and " + height); 
  } 
} 
 
// A derived class of TwoDShape for triangles. 
class Triangle : TwoDShape { 
  string style; // private 
   
  // Constructor 
  public Triangle(string s, double w, double h) { 
    width = w;  // init the base class 
    height = h; // init the base class 
 
    style = s;  // init the derived class 
  } 
 
  // Return area of triangle. 
  public double area() { 
    return width * height / 2;  
  } 
 
  // Display a triangle's style. 
  public void showStyle() { 
    Console.WriteLine("Triangle is " + style); 
  } 
} 
 
public class Shapes3 { 
  public static void Main() { 
    Triangle t1 = new Triangle("isosceles", 4.0, 4.0); 
    Triangle t2 = new Triangle("right", 8.0, 12.0); 
 
    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()); 
  } 
}


           
          

   

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 */
using System;

namespace Client.Chapter_5___Building_Your_Own_Classes
{
  public class CTORChapter
  {
    public int[] MyIntArray;
    public int Y;
    //Initialization can take place here
    private int ObjectCount = 0;
    static void Main(string[] args)
    {
      CTORChapter X = new CTORChapter();

      X.ObjectCount++;

      CTORChapter YY = new CTORChapter(10);
    }
    //Default CTORChapter
    CTORChapter()
    {
      MyIntArray = new int[10];
      //Do work necessary during object creation
    }
    //Overloads the CTOR allowing you to initialize Y
    CTORChapter(int myY)
    {
      Y = myY;
    }
  }
}




           
          

using System;

public class Class1 {
public static void Main(string[] args) {
Student student = new Student(“AAA”, 1234);
Console.WriteLine(“Welcome new student {0}”, student.GetString());
}
}

public class Student {
string sStudentName;
int nStudentID;
int nCreditHours;

public Student(string sName, int nID) {
if (sName == null) {
sName = “invalid”;
}
sStudentName = sName;

if (nID < 0) { nID = 0; } nStudentID = nID; nCreditHours = 0; } public string GetString() { string s = String.Format("{0}({1})",sStudentName, nStudentID); return s; } } [/csharp]

   
 

using System;
public class Starter {
    public static void Main() {
        XClass obj = new XClass();
    }
}

public class MyClass {
    public MyClass(int param) {
        Console.WriteLine("MyClass constructor");
    }
}

public class YClass : MyClass {
    public YClass(int param) : base(YClass.MethodA()) {
        Console.WriteLine("YClass constructor");
    }

    public static int MethodA() {
        Console.WriteLine("YClass constructor initializer");
        return 0;
    }
}

public class XClass : YClass {
    public XClass() : base(XClass.MethodA()) {
        Console.WriteLine("XClass constructor");
    }

    public static new int MethodA() {
        Console.WriteLine("XClass constructor initializer");
        return 0;
    }
}