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Overloading Comparison Operators

In Chapter 9, you learned how to implement the IComparable interface in order to compare the rela-

tive relationship between two like objects. Additionally, you may also overload the comparison

operators (<, >, <=, and >=) for the same class. Like the equality operators, C# demands that if you

overload <, you must also overload >. The same holds true for the <= and >= operators. If the Point

type overloaded these comparison operators, the object user could now compare Points as follows:

// Using the overloaded < and > operators.

static void Main(string[] args)

{

...

Console.WriteLine("ptOne < ptTwo : {0}", ptOne < ptTwo);

Console.WriteLine("ptOne > ptTwo : {0}", ptOne > ptTwo);

Console.ReadLine();

}

Assuming you have implemented the IComparable interface, overloading the comparison oper-

ators is trivial. Here is the updated class definition: