String methods (upcase, downcase, strip) in Ruby - Mini Project: Build & Apply

Using String Methods: upcase, downcase, strip

📖 Scenario: You work at a small online store. Customers enter their names and messages, but sometimes they add extra spaces or use different letter cases. You want to clean up their input before saving it.

🎯 Goal: You will write a Ruby program that takes a customer's name and message, removes extra spaces, and changes the text to uppercase or lowercase as needed.

📋 What You'll Learn

Create variables with exact names and values as instructed

Use the Ruby string methods upcase, downcase, and strip

Print the final cleaned and formatted strings exactly as shown

💡 Why This Matters

🌍 Real World

Cleaning and formatting user input is important in many apps to keep data consistent and easy to read.

💼 Career

Knowing how to manipulate strings is a basic skill for programming jobs, especially in web development and data processing.

1

Create the initial strings

Create two string variables: customer_name with the value " Alice " and customer_message with the value "Hello, I LOVE your store! ".

Ruby

# Create the variables customer_name and customer_message with the exact values
# Your code here

Need a hint?

Use double quotes for the strings and include the spaces exactly as shown.

2

Add variables for cleaned strings

Create two new variables: clean_name by removing spaces from customer_name using strip, and message_lower by converting customer_message to lowercase using downcase.

Ruby

customer_name = "  Alice  "
customer_message = "Hello, I LOVE your store!  "
# Create clean_name by stripping spaces from customer_name
# Create message_lower by converting customer_message to lowercase
# Your code here

Need a hint?

Use .strip to remove spaces and .downcase to make all letters lowercase.

3

Create an uppercase message

Create a variable message_upper by converting customer_message to uppercase using upcase.

Ruby

customer_name = "  Alice  "
customer_message = "Hello, I LOVE your store!  "

clean_name = customer_name.strip
message_lower = customer_message.downcase
# Create message_upper by converting customer_message to uppercase
# Your code here

Need a hint?

Use .upcase to make all letters uppercase.

4

Print the cleaned and formatted strings

Print the variables clean_name, message_lower, and message_upper each on its own line, in that order.

Ruby

customer_name = "  Alice  "
customer_message = "Hello, I LOVE your store!  "

clean_name = customer_name.strip
message_lower = customer_message.downcase

message_upper = customer_message.upcase
# Print clean_name, message_lower, and message_upper each on a new line
# Your code here

Need a hint?

Use puts to print each variable on its own line.