String type and immutability in C Sharp (C#) - Mini Project: Build & Apply

Understanding String Type and Immutability in C#

📖 Scenario: You are working on a simple text editor program. You need to understand how strings work in C# and why they cannot be changed once created.

🎯 Goal: Learn how to create strings, assign new values, and see how string immutability affects string operations.

📋 What You'll Learn

Create a string variable with a specific value

Create a second string variable to hold a new value

Concatenate two strings into a new string variable

Print the original and new string values to observe immutability

💡 Why This Matters

🌍 Real World

Understanding string immutability helps when working with text data in applications like text editors, messaging apps, or data processing.

💼 Career

Many programming jobs require handling text safely and efficiently. Knowing string immutability prevents bugs and improves performance.

1

Create a string variable

Create a string variable called originalText and set it to the value "Hello".

C Sharp (C#)

# Create a string variable called originalText and set it to "Hello"
// Your code here

Need a hint?

Use the syntax: string variableName = "value";

2

Assign a new string value

Create a string variable called newText and set it to the value "World".

C Sharp (C#)

string originalText = "Hello";
// Create a string variable called newText and set it to "World"
// Your code here

Need a hint?

Remember to use string keyword and assign the value with quotes.

3

Concatenate strings into a new variable

Create a string variable called combinedText that concatenates originalText and newText with a space between them.

C Sharp (C#)

string originalText = "Hello";
string newText = "World";
// Create combinedText by joining originalText, a space, and newText
// Your code here

Need a hint?

Use the + operator to join strings and include a space as " ".

4

Print original and combined strings

Print the values of originalText and combinedText using Console.WriteLine to show that originalText did not change.

C Sharp (C#)

string originalText = "Hello";
string newText = "World";
string combinedText = originalText + " " + newText;
// Print originalText and combinedText
// Your code here

Need a hint?

Use Console.WriteLine(variableName); to print each string on its own line.