How would you add an instance method full_name to this Ruby class that returns the concatenation of @first_name and @last_name separated by a space?

hard📝 Application Q8 of 15

Ruby - Classes and Objects

How would you add an instance method full_name to this Ruby class that returns the concatenation of @first_name and @last_name separated by a space?

class Member
  def initialize(first, last)
    @first_name = first
    @last_name = last
  end
end

Adef full_name first_name + last_name end

Bdef full_name @first_name + @last_name end

Cdef full_name "#{@first_name} #{@last_name}" end

Ddef full_name "#{first_name} #{last_name}" end

Step-by-Step Solution

Solution:

Step 1: Access instance variables
Instance variables @first_name and @last_name hold the names.
Step 2: Concatenate with space
Use string interpolation to combine them with a space: "\#{@first_name} \#{@last_name}".
Step 3: Check options
def full_name "#{@first_name} #{@last_name}" end correctly returns the full name with space. def full_name @first_name + @last_name end misses space. Options C and D use undefined local variables.
Final Answer:
def full_name "#{@first_name} #{@last_name}" end -> Option C
Quick Check:
Use instance variables with interpolation for full name. [OK]

Quick Trick: Use '@' variables and interpolation to combine names. [OK]

Common Mistakes:

Omitting space between names
Using variables without '@' prefix
Concatenating without space

Master "Classes and Objects" 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

How would you add an instance method full_name to this Ruby class that returns the concatenation of @first_name and @last_name separated by a space?

Step 1: Access instance variables

Step 2: Concatenate with space

Step 3: Check options

Final Answer:

Quick Check:

Want More Practice?