using System;

​

​

public interface IProgram // (1) to encapsulate the code - meaning hide the code, notice it is not public class but public interface

{

    void CallFunctionWithInterface();

}

​

​

public class Color // (2) Base class

{

    public string Red { get; set; }

    public string Blue { get; set; }

    public string Yellow { get; set; }

    public Color() // Default Constructor - same name of class

    {

        this.Red = string.Empty;

        this.Blue = string.Empty;

        this.Yellow = string.Empty;

    }

    public virtual void GetColors(Color color) // (3) A function, in c# it's called as Method

    {

        Console.WriteLine("2. " + color.Blue + " " + color.Red + " " + color.Yellow + " - Output of GetColors(Object) ");   

    }

    public virtual void GetColors(string x) // Notice it has the same name with GetColors(Color color) number (3), this is call Overloading, you can use both depending on your needs

    {

        Console.WriteLine("1. Test Color " + x + " - Output of GetColors(string x) - Overload Method\n");

    }

    public virtual void GetColors() // Another Overloading

    {

        Console.WriteLine("*****Tutorial - Mark Kevin Mardo*****\n");

    }

}

​

class PrimaryColor : Color //Primary color is child class, inheriting the functions in base class (2)

{   

    public override void GetColors(Color color) //Overriding

    {

        Console.WriteLine("Showed the colors: ");

        base.GetColors(color);

    }

}

​

public class Program : IProgram //Inheritance - same name of functions, it is used to hide codes you can only see the code in (1) when you try to hack the code

{

    public void Main(string[] args)

    {

        CallFunctionWithInterface();

    }

    public void CallFunctionWithInterface() 

    {

        PrimaryColor pColor = new PrimaryColor(); // Polymorphism happened, from child class or derived class (PrimaryColor) to base class (Color)

        //PrimaryColor was instanciated. Object is an instance of a class. The class is PrimaryColor

        //Filling the values of an Object pColor

        pColor.Yellow = "Yellow";

        pColor.Blue = "Blue";

        pColor.Red = "Red";

        pColor.GetColors();

        pColor.GetColors("Orange"); //Output 1

        pColor.GetColors(pColor);   //Output 2

    }

}