Just like with methods, we can create our own classes. So far, we've only been using one class, which looks like this:

class Program

{

static void Main(string[] args)

{

// All of the code to make your program do cool stuff

}

}

Well, we can create other classes too. These other classes can hold specific data which we can apply to our program to change it's behavior for good. For example, we can create a new class called Boy and a new class called Girl. Depending on which class we call, we can use different data for the rest of our program.

Here's an example of how this works:

class Program

{

static void Main(string[] args)

{

// Code that chooses between boy and girl

// if boy

Boy myBoy = new Boy();

color = myBoy.color;

// if girl

Girl myGirl = new Girl();

color = myGirl.color;

}

}

public class Boy

{

public string color = "blue";

}

public class Girl

{

public string color = "pink";

}

So, there's quite a bit going on here. First, notice that I've used comments to make my code shorter. Those comments should be replaced with either a switch or conditional statements which give the user a choice between boy or girl. Once we've chosen we have to then access the required class and pull out the relevant data. The "Boy myBoy = new Boy()" statement is creating a new instance of the Boy class in my Program class. Then, the "color = myBoy.color;" is pulling the color data out of the Boy class and applying it to the Program class.

This concept can be applied to any set of data that you want to hold separately from your main program class. In Computer Programming 2 we will use this concept a ton.

Watch this video to learn more:

Link to the video

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