Boolean values (true, false, nil) in Ruby - Mini Project: Build & Apply

Working with Boolean Values in Ruby

📖 Scenario: Imagine you are creating a simple system to track if a user is active, if they have admin rights, and if their profile is complete.

🎯 Goal: You will create variables with Boolean values true, false, and nil to represent user states, then print these values.

📋 What You'll Learn

Create three variables named is_active, is_admin, and profile_complete with exact Boolean or nil values.

Create a variable called unknown_status and set it to nil.

Use a puts statement to print all four variables in order.

💡 Why This Matters

🌍 Real World

Boolean values are used everywhere in programming to represent yes/no, on/off, or true/false conditions.

💼 Career

Understanding Boolean values is essential for writing conditions, controlling program flow, and handling optional data in software development.

1

Create Boolean variables for user states

Create three variables called is_active, is_admin, and profile_complete with the exact values true, false, and true respectively.

Ruby

# Create variables is_active, is_admin, and profile_complete with true, false, and true
# Your code here

Need a hint?

Use = true or = false to assign Boolean values.

2

Add a variable with nil value

Create a variable called unknown_status and set it to nil.

Ruby

is_active = true
is_admin = false
profile_complete = true
# Create variable unknown_status and set it to nil
# Your code here

Need a hint?

Use = nil to assign a nil value.

3

Print all variables

Use a single puts statement to print the variables is_active, is_admin, profile_complete, and unknown_status separated by spaces.

Ruby

is_active = true
is_admin = false
profile_complete = true
unknown_status = nil
# Print all four variables separated by spaces
# Your code here

Need a hint?

Use string interpolation with #{variable} inside double quotes to print variables separated by spaces.

4

Run the program to see the output

Run the program to display the values of is_active, is_admin, profile_complete, and unknown_status.

Ruby

is_active = true
is_admin = false
profile_complete = true
unknown_status = nil
puts "#{is_active} #{is_admin} #{profile_complete} #{unknown_status}"  # Run the program

Need a hint?

The output should show true false true followed by an empty space for nil.