Struct declaration and behavior in C Sharp (C#) - Mini Project: Build & Apply

Struct declaration and behavior

📖 Scenario: You are creating a simple program to represent a point in 2D space using a struct. This will help you understand how structs work in C# and how they behave differently from classes.

🎯 Goal: Build a C# program that declares a struct called Point with two integer fields, creates an instance of it, modifies its values, and prints the results to see how structs behave.

📋 What You'll Learn

Declare a struct named Point with two integer fields: X and Y.

Create a variable of type Point named p1 and set X to 5 and Y to 10.

Create a second variable p2 and assign it the value of p1.

Change p2.X to 20 and p2.Y to 30.

Print the values of p1 and p2 to observe the behavior of structs.

💡 Why This Matters

🌍 Real World

Structs are useful for small data containers like points, colors, or simple records where copying data is cheap and you want value-type behavior.

💼 Career

Understanding structs helps in writing efficient C# code, especially in game development, graphics programming, and performance-critical applications.

1

Declare the Point struct

Declare a struct named Point with two public integer fields: X and Y.

C Sharp (C#)

// Declare the Point struct with fields X and Y
// Your code here

Need a hint?

Use the struct keyword followed by the name Point. Inside, declare two public integer fields named X and Y.

2

Create and initialize p1

Create a variable called p1 of type Point and set p1.X to 5 and p1.Y to 10.

C Sharp (C#)

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

// Create variable p1 and set X=5, Y=10
// Your code here

Need a hint?

Declare p1 as a variable of type Point. Then assign 5 to p1.X and 10 to p1.Y.

3

Copy p1 to p2 and modify p2

Create a variable called p2 and assign it the value of p1. Then change p2.X to 20 and p2.Y to 30.

C Sharp (C#)

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

Point p1;
p1.X = 5;
p1.Y = 10;

// Create p2 as a copy of p1 and change p2.X to 20 and p2.Y to 30
// Your code here

Need a hint?

Assign p1 to p2 to copy the struct. Then change the fields of p2 to new values.

4

Print the values of p1 and p2

Write Console.WriteLine statements to print p1.X, p1.Y, p2.X, and p2.Y in the format shown: p1: X=5, Y=10 and p2: X=20, Y=30.

C Sharp (C#)

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

Point p1;
p1.X = 5;
p1.Y = 10;

Point p2 = p1;
p2.X = 20;
p2.Y = 30;

// Print p1 and p2 values
// Your code here

Need a hint?

Use Console.WriteLine with string interpolation to print the values of p1 and p2 fields exactly as shown.