[Solved] Identify the problem in this code snippet: unless user.nil? puts 'No user' end — Ans: Logic is reversed; should use if instead of unless | Ruby

Ruby - Control Flow

Identify the problem in this code snippet:

unless user.nil?
  puts 'No user'
end

ASyntax error due to missing end

BLogic is reversed; should use if instead of unless

CNo problem; code is correct

DShould use user == nil instead of user.nil?

Step-by-Step Solution

Solution:

Step 1: Understand condition meaning
user.nil? is true if user is nil.
Step 2: Analyze unless logic
unless user.nil? runs code if user is NOT nil, but message says 'No user', which is opposite.
Final Answer:
Logic is reversed; should use if instead of unless -> Option B
Quick Check:
unless negates condition; check message meaning [OK]

Quick Trick: Match message meaning with condition logic [OK]

Common Mistakes:

MISTAKES

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