You want to create a greeting message that includes a user's first and last name stored in variables first and last. Which code correctly uses string interpolation to produce "Hello, John Doe!"?

hard📝 Application Q8 of 15

Ruby - Variables and Data Types

You want to create a greeting message that includes a user's first and last name stored in variables first and last. Which code correctly uses string interpolation to produce "Hello, John Doe!"?

A"Hello, #{first} #{last}!"

B"Hello, #{first + last}!"

C"Hello, #{first}, #{last}!"

D"Hello, first last!"

Step-by-Step Solution

Solution:

Step 1: Understand desired output format
The greeting should show first and last name separated by a space.
Step 2: Check each option's interpolation
"Hello, #{first} #{last}!" inserts both variables with a space between them correctly. "Hello, #{first + last}!" concatenates without space. "Hello, #{first}, #{last}!" adds a comma which is not desired. "Hello, first last!" uses literal text.
Final Answer:
"Hello, #{first} #{last}!" -> Option A
Quick Check:
Use #{var} #{var} for spaced interpolation [OK]

Quick Trick: Use #{var} #{var} to insert multiple variables with space [OK]

Common Mistakes:

Concatenating without spaces inside interpolation
Adding unwanted punctuation
Using literal text instead of variables

Master "Variables and Data Types" in Ruby

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions

More Ruby Quizzes

You want to create a greeting message that includes a user's first and last name stored in variables first and last. Which code correctly uses string interpolation to produce "Hello, John Doe!"?

Step 1: Understand desired output format

Step 2: Check each option's interpolation

Final Answer:

Quick Check:

Want More Practice?