What are optional parameters in C#?

What are optional parameters in C#?

Optional parameters in C# allow you to define parameters in a method that can be omitted when calling the method.

Can you give me an example of how to use them?

Sure! Here's an example:

public void Greet(string name, string greeting = "Hello") {
    Console.WriteLine($"{greeting}, {name}!");
}

You can call Greet("Alice") or Greet("Alice", "Hi").

What happens if I don't provide a value for the optional parameter?

If you don't provide a value for the optional parameter, the method uses the default value specified in the method definition.

Are there any limitations to using optional parameters?

Yes, optional parameters must be defined after all required parameters in the method signature.