Implement an implicit conversion operator in CSharp

 // w  ww. j a v  a  2  s.  com
using System; 
 
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; } 

 
  // An implicit conversion from ThreeD to int. 
  public static implicit operator int(ThreeD op1) 
  { 
    return op1.x * op1.y * op1.z; 
  } 
   
  // Show X, Y, Z coordinates. 
  public void show() 
  { 
    Console.WriteLine(x + ", " + y + ", " + z); 
  } 
} 
 
public class ThreeDDemo5 { 
  public static void Main() { 
    ThreeD a = new ThreeD(1, 2, 3); 
    ThreeD b = new ThreeD(10, 10, 10); 
    ThreeD c = new ThreeD(); 
    int i; 
 
    a.show(); 
    b.show(); 
 
    i = a; // convert to int 
    Console.WriteLine("Result of i = a: " + i); 
    Console.WriteLine(); 
 
    i = a * 2 - b; // convert to int 
    Console.WriteLine("result of a * 2 - b: " + i); 
  } 
}