Ternary operator usage in Ruby - Mini Project: Build & Apply

Ternary Operator Usage

📖 Scenario: You are creating a simple program to check if a number is even or odd. This is like deciding if a number is like a pair of shoes (even) or a single shoe (odd).

🎯 Goal: Build a Ruby program that uses the ternary operator to decide if a number is even or odd and prints the result.

📋 What You'll Learn

Create a variable called number with the value 7.

Create a variable called result that uses the ternary operator to check if number is even or odd.

Print the result variable.

💡 Why This Matters

🌍 Real World

Ternary operators help write short and clear decisions in code, like quickly choosing between two options.

💼 Career

Many programming jobs require writing clean and concise code. Using ternary operators is a common skill for making decisions in your programs.

1

DATA SETUP: Create the number variable

Create a variable called number and set it to 7.

Ruby

# Create a variable called number and set it to 7
# Your code here

Need a hint?

Use = to assign the value 7 to the variable number.

2

CONFIGURATION: Prepare the ternary operator

Create a variable called result that uses the ternary operator to check if number is even. If it is even, set result to "Even", otherwise set it to "Odd".

Ruby

number = 7
# Use the ternary operator to set result to "Even" or "Odd" based on number
# Your code here

Need a hint?

Use condition ? value_if_true : value_if_false format. The condition here is number.even?.

3

CORE LOGIC: Use the ternary operator correctly

Make sure the ternary operator uses number.even? as the condition, and assigns "Even" or "Odd" to result accordingly.

Ruby

number = 7
result = number.even? ? "Even" : "Odd"
# Your code here

Need a hint?

Check that the ternary operator is written exactly as number.even? ? "Even" : "Odd".

4

OUTPUT: Print the result

Write a puts statement to print the value of result.

Ruby

number = 7
result = number.even? ? "Even" : "Odd"
# Print the result
# Your code here

Need a hint?

Use puts result to show the output.