Implement an Interface

The interface IGreeter declares a method Greet that returns a string. Make the FriendlyGreeter class implement IGreeter by providing a Greet method that returns Hello!. Do NOT write a Main method.

The tester runs IGreeter g = new FriendlyGreeter(); Console.WriteLine(g.Greet()); and the program prints:
Hello!

Expected Output:

Hello!

Topics:

Polymorphism

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