[Solved] What will be the output of this Ruby code? File.open('test.txt', 'w') { |f| f.puts 'Line 1' } content = File.read('test.txt') puts content | Ruby

Ruby - File IO

What will be the output of this Ruby code?

File.open('test.txt', 'w') { |f| f.puts 'Line 1' }
content = File.read('test.txt')
puts content

AError: file not found

Btest.txt

Cnil

DLine 1

Step-by-Step Solution

Solution:

Step 1: Write 'Line 1' to file using block
The block writes 'Line 1' plus newline to 'test.txt' and closes file.
Step 2: Read file content and print
File.read reads the file content 'Line 1\n', puts prints it as 'Line 1'.
Final Answer:
Line 1 -> Option D
Quick Check:
Write then read file = output written text [OK]

Quick Trick: Write then read file prints what was saved [OK]

Common Mistakes:

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