FAQ: Interfaces - Implementing an Interface

This community-built FAQ covers the “Implementing an Interface” exercise from the lesson “Interfaces”.

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This exercise can be found in the following Codecademy content:

Learn C#

FAQs on the exercise Implementing an Interface

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Why do we need interfaces? A common thing I am seeing in the C# lessons is that they do not explain or tell you why you need something. How could you possibly know what your doing is right if you don’t know why its right from wrong? At best a lot of the lessons barely explain to you how to do a lot of this. Without MS or StackOverflow this would be impossible to learn, yet we are not paying them to learn what you teach us, which to me equates to you not deserving the money spent on PRO if you cannot adequately explain how and why these things you teach are important and why and when we need to use them.

Before even moving on to further lessons, why are we even doing this, because you never explain why so far. At this rate why are we paying for this when other sites give more info and for free?

using System;

namespace LearnInterfaces
{
  interface IAutomobile
  {
    string LicensePlate { get; }
    double Speed { get; }
    int Wheels { get; }
    void Honk();
  }
}```

type or paste code here

using System;

namespace LearnInterfaces
{
  class Sedan : IAutomobile
  {
    public string LicensePlate { get; }
    public double Speed { get; }
    public int Wheels { get; }
    public void Honk()
    {
      Console.WriteLine("HONK");
    }
  }
}```
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