Readonly structs in C Sharp (C#) - Mini Project: Build & Apply

Working with Readonly Structs in C#

📖 Scenario: You are building a simple program to represent a point in 2D space. The point's coordinates should never change once created, to avoid accidental changes in your program.

🎯 Goal: Create a readonly struct called Point with two properties X and Y. Initialize these properties through a constructor. Then, create an instance of Point and print its coordinates.

📋 What You'll Learn

Create a readonly struct named Point

Add two readonly properties: X and Y of type int

Create a constructor that sets X and Y

Create an instance of Point with X = 3 and Y = 4

Print the coordinates in the format: (X, Y)

💡 Why This Matters

🌍 Real World

Readonly structs are useful when you want to create small data containers that should not change after creation, like points, colors, or measurements.

💼 Career

Understanding readonly structs helps you write safer and more efficient C# code, which is valuable in software development jobs involving performance and data integrity.

1

Create the readonly struct with properties

Create a readonly struct named Point with two readonly properties: int X and int Y.

C Sharp (C#)

# Your code here to create readonly struct Point with int properties X and Y

Need a hint?

Use readonly struct keyword and create properties with only getters.

2

Add a constructor to initialize properties

Add a constructor to the Point struct that takes two int parameters named x and y, and sets the properties X and Y.

C Sharp (C#)

public readonly struct Point
{
    public int X { get; }
    public int Y { get; }

    // Add constructor here
    # Your code here
}

Need a hint?

Constructor parameters should be int x and int y. Assign them to properties inside the constructor.

3

Create an instance of Point

Create a variable named point of type Point and initialize it with X = 3 and Y = 4 using the constructor.

C Sharp (C#)

public readonly struct Point
{
    public int X { get; }
    public int Y { get; }

    public Point(int x, int y)
    {
        X = x;
        Y = y;
    }
}

// Create an instance of Point
# Your code here

Need a hint?

Use the constructor with 3 and 4 as arguments.

4

Print the coordinates of the Point

Write a Console.WriteLine statement to print the coordinates of point in the format (X, Y) using string interpolation.

C Sharp (C#)

public readonly struct Point
{
    public int X { get; }
    public int Y { get; }

    public Point(int x, int y)
    {
        X = x;
        Y = y;
    }
}

Point point = new Point(3, 4);

// Print the point coordinates
# Your code here

Need a hint?

Use Console.WriteLine($"({point.X}, {point.Y})") to print the coordinates.