What is the purpose of interfaces in C#?

What is the purpose of interfaces in C#?

Interfaces in C# define a contract that classes can implement, allowing for polymorphism and code flexibility.

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

Sure! Here's a simple example:

public interface IAnimal {
    void Speak();
}

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

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

In this example, both Dog and Cat implement the IAnimal interface.

What are the advantages of using interfaces?

Using interfaces promotes loose coupling, enhances testability, and allows for multiple implementations, which improves code maintainability.

Can a class implement multiple interfaces?

Yes, a class in C# can implement multiple interfaces, allowing it to inherit behaviors from different sources.