Boxing and unboxing execution in C Sharp (C#) - Mini Project: Build & Apply

Boxing and Unboxing Execution

📖 Scenario: Imagine you are working with a simple program that stores numbers in a general container and then retrieves them back as specific types. This is like putting a small toy into a box and then taking it out to play with it again.

🎯 Goal: You will create a program that shows how to put a value type into an object (boxing) and then get it back to its original type (unboxing) in C#.

📋 What You'll Learn

Create an integer variable with a specific value

Box the integer into an object variable

Unbox the object back into an integer variable

Print the original integer, the boxed object, and the unboxed integer

💡 Why This Matters

🌍 Real World

Boxing and unboxing are used when you need to store value types in collections that hold objects, like ArrayList or when using APIs that expect objects.

💼 Career

Understanding boxing and unboxing helps avoid performance issues and errors in C# programming, which is important for software development jobs.

1

Create an integer variable

Create an integer variable called number and set it to 42.

C Sharp (C#)

# Your code here

Need a hint?

Use int number = 42; to create the variable.

2

Box the integer into an object

Create an object variable called boxedNumber and assign it the value of number to perform boxing.

C Sharp (C#)

int number = 42;
# Your code here

Need a hint?

Assign number to boxedNumber to box it.

3

Unbox the object back to an integer

Create an integer variable called unboxedNumber and assign it the value of boxedNumber cast back to int to perform unboxing.

C Sharp (C#)

int number = 42;
object boxedNumber = number;
# Your code here

Need a hint?

Use int unboxedNumber = (int)boxedNumber; to unbox.

4

Print all values

Write three Console.WriteLine statements to print number, boxedNumber, and unboxedNumber each on its own line.

C Sharp (C#)

int number = 42;
object boxedNumber = number;
int unboxedNumber = (int)boxedNumber;
# Your code here

Need a hint?

Use Console.WriteLine(variable); for each variable.