Overload true and fase for ThreeD : Operator Overloading « Class Interface « C# / C Sharp

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C# / C Sharp » Class Interface » Operator OverloadingScreenshots 
Overload true and fase for ThreeD
Overload true and fase for ThreeD

/*
C#: The Complete Reference 
by Herbert Schildt 

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


// Overload true and fase for ThreeD. 
 
using System;   
   
// A three-dimensional coordinate class.   
class ThreeD {   
  int x, y, z; // 3-D coordinates     
   
  public ThreeD() { x = y = z = 0}   
  public ThreeD(int i, int j, int k) { x = i; y = j; z = k; }   
 
  // Overload true.   
  public static bool operator true(ThreeD op) { 
    if((op.x != 0|| (op.y != 0|| (op.z != 0)) 
      return true// at least one coordinate is non-zero 
    else 
      return false
  }   
 
  // Overload false. 
  public static bool operator false(ThreeD op) { 
    if((op.x == 0&& (op.y == 0&& (op.z == 0)) 
      return true// all coordinates are zero 
    else 
      return false
  }   
 
  // Overload unary --.  
  public static ThreeD operator --(ThreeD op)  
  {  
    // for ++, modify argument  
    op.x--;  
    op.y--;   
    op.z--;   
  
    return op;  
  }  
 
  // Show X, Y, Z coordinates.   
  public void show()   
  {   
    Console.WriteLine(x + ", " + y + ", " + z);   
  }   
}   
   
public class TrueFalseDemo {   
  public static void Main() {   
    ThreeD a = new ThreeD(567);   
    ThreeD b = new ThreeD(101010);   
    ThreeD c = new ThreeD(000);   
   
    Console.Write("Here is a: ");   
    a.show();   
    Console.Write("Here is b: ");   
    b.show();   
    Console.Write("Here is c: ");   
    c.show();   
    Console.WriteLine();   
   
    if(aConsole.WriteLine("a is true.")
    else Console.WriteLine("a is false.")
 
    if(bConsole.WriteLine("b is true.")
    else Console.WriteLine("b is false.")
 
    if(cConsole.WriteLine("c is true.")
    else Console.WriteLine("c is false.")
 
    Console.WriteLine()
 
    Console.WriteLine("Control a loop using a ThreeD object.")
    do 
      b.show()
      b--; 
    while(b)
 
  }   
}


           
       
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