[Solved] What will this Ruby code output?value = 'b' case value.downcase when 'a' puts 'Letter A' when 'b' puts 'Letter B' else puts 'Unknown' end | Ruby

Ruby - Control Flow

What will this Ruby code output?

value = 'b'
case value.downcase
when 'a'
  puts 'Letter A'
when 'b'
  puts 'Letter B'
else
  puts 'Unknown'
end

ALetter A

BError

CLetter B

DUnknown

Step-by-Step Solution

Solution:

Step 1: Evaluate the case expression
value is 'b', calling downcase keeps it 'b'.
Step 2: Match the when clauses
when 'b' matches, so it prints 'Letter B'.
Final Answer:
Letter B -> Option C
Quick Check:
downcase matches when 'b' = Letter B [OK]

Quick Trick: Use methods in case expression for flexible matching [OK]

Common Mistakes:

MISTAKES

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