[Solved] Consider this Ruby code:class Account def active? false end def activate! @active = true end end acc = Account.new puts acc.active? acc.activate! puts acc.active?What is the output? | Ruby

Ruby - Methods

Consider this Ruby code:

class Account
  def active?
    false
  end

  def activate!
    @active = true
  end
end

acc = Account.new
puts acc.active?
acc.activate!
puts acc.active?

What is the output?

Atrue\ntrue

Bfalse\ntrue

Cfalse\nfalse

Dtrue\nfalse

Step-by-Step Solution

Solution:

Step 1: Check active? method
It always returns false, ignoring any instance variables.
Step 2: Check activate! method
It sets @active = true but active? does not use @active, so output remains unchanged.
Final Answer:
false\nfalse -> Option C
Quick Check:
Method must use instance vars to reflect changes [OK]

Quick Trick: ? methods must reflect state to change output [OK]

Common Mistakes:

Assuming activate! changes active? output
Ignoring method implementation details
Confusing variable assignment with method return

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More Ruby Quizzes

Consider this Ruby code:

Step 1: Check `active?` method

Step 2: Check `activate!` method

Final Answer:

Quick Check:

Want More Practice?

Consider this Ruby code:

Step 1: Check active? method

Step 2: Check activate! method

Final Answer:

Quick Check:

Want More Practice?

Step 1: Check `active?` method

Step 2: Check `activate!` method