Overload unary - and ++ : unary minus plusplus « Operator Overload « C# / CSharp Tutorial

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C# / CSharp Tutorial » Operator Overload » unary minus plusplus 
8.14.1.Overload unary - and ++
using System; 
 
class TwoDimension 
  int x, y;
 
  public TwoDimension() { 
     x = y = 0
  
  public TwoDimension(int i, int j) { 
     x = i; 
     y = j;
  
 
  // Overload unary -. 
  public static TwoDimension operator -(TwoDimension op
  
    TwoDimension result = new TwoDimension()
 
    result.x = -op.x; 
    result.y = -op.y;  
 
    return result; 
  
 
  // Overload unary ++. 
  public static TwoDimension operator ++(TwoDimension op
  
    // for ++, modify argument 
    op.x++; 
    op.y++;  
 
    return op; 
  
 
  // Show X, Y 
  public void show() 
  
    Console.WriteLine(x + ", " + y)
  

 
class MainClass 
  public static void Main() { 
    TwoDimension a = new TwoDimension(12)
    TwoDimension b = new TwoDimension(1010)
    TwoDimension c = new TwoDimension()
 
    Console.Write("Here is a: ")
    a.show()
    Console.WriteLine()
    Console.Write("Here is b: ")
    b.show()
    Console.WriteLine()
 
    c = -a; // assign -a to c 
    Console.Write("Result of -a: ")
    c.show()
    Console.WriteLine()
 
    a++; // increment a 
    Console.Write("Result of a++: ")
    a.show();   
  
}
Here is a: 1, 2

Here is b: 10, 10

Result of -a: -1, -2

Result of a++: 2, 3
8.14.unary minus plusplus
8.14.1.Overload unary - and ++
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