String concatenation and << in Ruby - Mini Project: Build & Apply

String concatenation and << in Ruby

📖 Scenario: You are creating a simple greeting message by joining different parts of text.

🎯 Goal: Build a greeting message by concatenating strings using the + operator and the operator.

📋 What You'll Learn

Create a string variable with a greeting

Create a string variable with a name

Concatenate the greeting and name using +

Add an exclamation mark using <<

Print the final greeting message

💡 Why This Matters

🌍 Real World

Building messages dynamically is common in apps like chat programs, notifications, and user interfaces.

💼 Career

Understanding string manipulation is essential for software development, especially when preparing text output or user messages.

1

Create greeting and name strings

Create a string variable called greeting with the value "Hello" and another string variable called name with the value "Alice".

Ruby

# Create the greeting and name strings
# Your code here

Need a hint?

Use = to assign strings to variables.

2

Concatenate greeting and name with +

Create a new string variable called message by concatenating greeting, a space " ", and name using the + operator.

Ruby

greeting = "Hello"
name = "Alice"
# Concatenate greeting, space, and name using +
# Your code here

Need a hint?

Use + to join strings and include a space between words.

3

Add exclamation mark using <<

Use the << operator to add an exclamation mark "!" to the end of the message string.

Ruby

greeting = "Hello"
name = "Alice"
message = greeting + " " + name
# Add an exclamation mark to message using <<
# Your code here

Need a hint?

The << operator adds text to the existing string.

4

Print the final message

Print the message variable to display the full greeting.

Ruby

greeting = "Hello"
name = "Alice"
message = greeting + " " + name
message << "!"
# Print the message
# Your code here

Need a hint?

Use puts to print the string to the screen.