[Solved] What will the following Ruby code print if sample.txt contains:one\ntwo\nthreeFile.readlines('sample.txt').each { |line| puts line.strip.upcase } | Ruby

Ruby - File IO

What will the following Ruby code print if sample.txt contains:

one\ntwo\nthree

File.readlines('sample.txt').each { |line| puts line.strip.upcase }

AONE\nTWO\nTHREE (each on separate lines)

Bone\ntwo\nthree

CONE\nTWO\nTHREE\n

DONE\nTWO\nTHREE

Step-by-Step Solution

Solution:

Step 1: Analyze each line processing
Each line is stripped of whitespace and converted to uppercase.
Step 2: Understand puts behavior
puts prints each string on its own line, so output is three lines: ONE, TWO, THREE.
Final Answer:
ONE\nTWO\nTHREE (each on separate lines) -> Option A
Quick Check:
puts prints each string on new line = D [OK]

Quick Trick: puts prints each element on a new line automatically [OK]

Common Mistakes:

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