How do I implement interfaces in C#?

How do I implement interfaces in C#?

To implement an interface in C#, you define the interface using the 'interface' keyword and then implement it in a class using the 'implements' keyword.

Can you give me an example of an interface and its implementation?

Sure! Here's a simple example:

public interface IAnimal
{
    void Speak();
}

public class Dog : IAnimal
{
    public void Speak()
    {
        Console.WriteLine("Woof!");
    }
}

What if I want to implement multiple interfaces?

You can implement multiple interfaces by separating them with a comma. For example:

public class Cat : IAnimal, IMammal
{
    public void Speak()
    {
        Console.WriteLine("Meow!");
    }
}

Are there any restrictions on what methods an interface can have?

Yes, interfaces can only contain method signatures, properties, events, and indexers. They cannot contain any implementation.