What will be the output of this Ruby code?

medium📝 Predict Output Q5 of 15

Ruby - Class Methods and Variables

class Bird
  @count = 5

  def self.count
    @count
  end
end

class Parrot < Bird
  @count = 10
end

puts Bird.count
puts Parrot.count

A5\n10

B10\n10

C5\n5

Dnil\nnil

Step-by-Step Solution

Solution:

Step 1: Understand class instance variables are not shared
Bird and Parrot each have their own @count variable.
Step 2: Check values
Bird.count returns 5, Parrot.count returns 10 as set separately.
Final Answer:
5\n10 -> Option A
Quick Check:
Separate class instance vars in inheritance = 5\n10 [OK]

Quick Trick: Class instance vars are separate per class, not inherited [OK]

Common Mistakes:

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