You want to create a greeting message that includes a user's name and the current year calculated dynamically. Which code correctly uses string interpolation to achieve this?

hard📝 Application Q15 of 15

Ruby - Variables and Data Types

name = "Sam"
current_year = Time.now.year
# Choose the correct greeting message

A"Hello, #{name}! Welcome to current_year."

B"Hello, #{name}! Welcome to #{current_year}."

C'Hello, #{name}! Welcome to #{current_year}.'

D"Hello, name! Welcome to #{Time.now.year}."

Step-by-Step Solution

Solution:

Step 1: Check interpolation of variables
"Hello, #{name}! Welcome to #{current_year}." correctly uses double quotes and interpolates both name and current_year variables.
Step 2: Verify dynamic year calculation
"Hello, name! Welcome to #{Time.now.year}." uses Time.now.year inside interpolation but misses interpolating name properly (it's plain text). "Hello, #{name}! Welcome to current_year." treats current_year as plain text. 'Hello, #{name}! Welcome to #{current_year}.' uses single quotes, so no interpolation.
Final Answer:
"Hello, #{name}! Welcome to #{current_year}." -> Option B
Quick Check:
Double quotes + #{variable} for dynamic values [OK]

Quick Trick: Use double quotes and #{variable} for dynamic strings [OK]

Common Mistakes:

MISTAKES

Using single quotes which disable interpolation
Not interpolating variables properly
Confusing variable names with plain text

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More Ruby Quizzes

You want to create a greeting message that includes a user's name and the current year calculated dynamically. Which code correctly uses string interpolation to achieve this?

Step 1: Check interpolation of variables

Step 2: Verify dynamic year calculation

Final Answer:

Quick Check:

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