Gain insights into OOP with C#. Delve into practical coding examples and exercises, exploring OOP concepts through a real-world vending machine project to understand and apply them effectively.

docker.tar.gz

Project

Object-oriented programming (OOP) has been around for decades. As the original object-oriented language, C# is a mainstay in the world of computer programming.

All the concepts of object-oriented programming that C# developers love to have in their arsenal are explained in detail along with relevant coding examples and exercises in this course.

This course is unique in its nature as it follows a project-based learning approach. Throughout the course, a real-world example of vending machine is followed to help the learners develop a firm understanding of the stated OOP concepts.

The learners will not only be able to play around with the project,  they’ll also be able to see all the concepts in action in this project.

Learn Object-Oriented Programming in C#

// Abstarct Book Class
abstract class Book {

  // Private Fields
  private string _name;
  private string _author;
  private string _price;

  protected string Name{
    get {return this._name;}
  }
   protected string Author{
    get {return this._author;}
  }
   protected string Price{
    get {return this._price;}
  }

  // Parameterized Constructor
  public Book(string name, string author, string price) {
    this._name = name;
    this._author = author;
    this._price = price;
  }

  // Abstract Method
  public abstract string GetDetails();

}

// Class MyBook extending Book Class
class MyBook : Book {

  // Parameterized Constructor
  public MyBook(string name, string author, string price) 
    : base(name, author, price)
  { }

  // Overrideing the GetDetails Abstract Method of the Base Class
  public override string GetDetails() {
   return Name + ", " + Author + ", " + Price;
  }

}

class Demo {

  public static void Main(string[] args) {
    Book myBook = new MyBook("Harry Potter", "J.k. Rowling", "100");
    Console.WriteLine(myBook.GetDetails());

  }
  
}

abstract class Book {

  protected String name;
  protected String author;
  protected String price;

  public Book(String name, String author, String price) {

    this.name = name;
    this.author = author;
    this.price = price;
  }

  public abstract String getDetails();

}




// MyBook class extending Book Class
class MyBook extends Book {

  // Parameterized Constructor
  public MyBook(String name, String author, String price) {

    super(name, author, price); // Calling Base Class Constructor
  }

  // Override the getDetails method of the Base Class
  public String getDetails() {
    
    return name + ", " + author + ", " + price;
  }
}

## Explanation

* **Line 32:**  Extended the `MyBook` class from the `Book` class.
* **Line 36:**  Called the base class constructor.
* **Line 40:**  The abstract method `GetDetails()` is overridden.
* **Line 41:**  Implemented the overridden abstract method `GetDetails()` which returns the concatenated details in the form of a string.

This review provides a detailed analysis to solve the 'Implement an Abstract Method in a Base Class' challenge.

Introduction to Object-Oriented Programming

Classes and Objects

Data Hiding

Inheritance

Polymorphism

Abstract Classes and Interfaces

Composition, Aggregation and Association

Solution Review: Implement an Abstract Method in a Base Class

Solution