[Solved] Find the error in this Ruby snippet:arr = [1, 2, 3] arr.each do |num| puts num * 2 end puts num — Ans: num is not accessible outside the block | Ruby

Ruby - Basics and Runtime

Find the error in this Ruby snippet:

arr = [1, 2, 3]
arr.each do |num|
  puts num * 2
end
puts num

ANo error, code runs fine

BSyntax error in block definition

Carr.each cannot be used with puts

Dnum is not accessible outside the block

Step-by-Step Solution

Solution:

Step 1: Understand block variable scope
Variable 'num' is local to the block and not accessible outside.
Step 2: Identify error cause
puts num outside the block causes an error because 'num' is undefined there.
Final Answer:
num is not accessible outside the block -> Option D
Quick Check:
Block variables have local scope only [OK]

Quick Trick: Block variables can't be used outside their block [OK]

Common Mistakes:

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