Which of the following is the correct syntax to open a file named data.txt for reading using a block in Ruby?

easy📝 Syntax Q12 of 15

Ruby - File IO

Which of the following is the correct syntax to open a file named data.txt for reading using a block in Ruby?

AFile.open('data.txt') |file| puts file.read end

BFile.open('data.txt') puts file.read end

CFile.open('data.txt') { |file| puts file.read }

DFile.open('data.txt') do puts file.read end

Step-by-Step Solution

Solution:

Step 1: Identify correct block syntax
Ruby uses either curly braces or do...end with a block parameter like |file|.
Step 2: Check each option
File.open('data.txt') { |file| puts file.read } correctly uses { |file| ... }. Others have syntax errors or missing block parameters.
Final Answer:
File.open('data.txt') { |file| puts file.read } -> Option C
Quick Check:
Correct block syntax = File.open('data.txt') { |file| puts file.read } [OK]

Quick Trick: Use {|var| ...} or do |var| ... end for blocks [OK]

Common Mistakes:

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