Get and set accessors in C Sharp (C#) - Mini Project: Build & Apply

Using Get and Set Accessors in C#

📖 Scenario: You are creating a simple program to manage a Book object. Each book has a Title and a Price. You want to control how these values are accessed and changed using get and set accessors.

🎯 Goal: Build a Book class with Title and Price properties using get and set accessors. Then create an instance of Book, set its properties, and print them.

📋 What You'll Learn

Create a class called Book with private fields for title and price.

Add public properties Title and Price with get and set accessors.

In the set accessor of Price, ensure the price cannot be set to a negative value; if negative, set it to 0.

Create an instance of Book in Main, set the Title to "C# Basics" and Price to 25.

Print the Title and Price of the book.

💡 Why This Matters

🌍 Real World

Get and set accessors are used in real programs to protect data and add rules when changing values, like preventing negative prices.

💼 Career

Understanding properties with get and set is essential for writing clean, safe, and maintainable C# code in many software development jobs.

1

Create the Book class with private fields

Create a class called Book with private fields string title and decimal price.

C Sharp (C#)

# Your code here

Need a hint?

Use private string title; and private decimal price; inside the class.

2

Add public properties with get and set accessors

Add public properties Title and Price to the Book class. Use get and set accessors for both. In the set accessor of Price, if the value is negative, set price to 0; otherwise, set it to the value.

C Sharp (C#)

class Book
{
    private string title;
    private decimal price;

    // Add Title and Price properties with get and set
    // Your code here
}

Need a hint?

Use public string Title { get { return title; } set { title = value; } } and similar for Price with a condition in set.

3

Create a Book instance and set properties

In the Main method, create an instance of Book called myBook. Set its Title to "C# Basics" and Price to 25.

C Sharp (C#)

class Book
{
    private string title;
    private decimal price;

    public string Title
    {
        get { return title; }
        set { title = value; }
    }

    public decimal Price
    {
        get { return price; }
        set { price = value < 0 ? 0 : value; }
    }
}

class Program
{
    static void Main()
    {
        // Create myBook and set Title and Price
        // Your code here
    }
}

Need a hint?

Use Book myBook = new Book(); then set properties with myBook.Title = "C# Basics"; and myBook.Price = 25;.

4

Print the Title and Price of the book

Add Console.WriteLine statements in Main to print the Title and Price of myBook in the format: Title: C# Basics and Price: 25.

C Sharp (C#)

class Book
{
    private string title;
    private decimal price;

    public string Title
    {
        get { return title; }
        set { title = value; }
    }

    public decimal Price
    {
        get { return price; }
        set { price = value < 0 ? 0 : value; }
    }
}

class Program
{
    static void Main()
    {
        Book myBook = new Book();
        myBook.Title = "C# Basics";
        myBook.Price = 25;

        // Print Title and Price
        // Your code here
    }
}

Need a hint?

Use Console.WriteLine($"Title: {myBook.Title}"); and Console.WriteLine($"Price: {myBook.Price}");.