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// Overloading binary operators results in a freebie shorthand operator.

static void Main(string[] args)

{

...

// Freebie +=

Point ptThree = new Point(90, 5);

Console.WriteLine("ptThree = {0}", ptThree);

Console.WriteLine("ptThree += ptTwo: {0}", ptThree += ptTwo);

// Freebie -=

Point ptFour = new Point(0, 500);

Console.WriteLine("ptFour = {0}", ptFour);

Console.WriteLine("ptFour -= ptThree: {0}", ptFour -= ptThree);

Console.ReadLine();

}

Overloading Unary Operators

C# also allows you to overload various unary operators, such as ++ and --. When you overload a

unary operator, you will also define a static method via the operator keyword; however, in this case

you will simply pass in a single parameter that is the same type as the defining class/structure. For

example, if you were to update the Point with the following overloaded operators:

public struct Point

{

...