Ruby - File IO
What will be the output of this Ruby code if the file
data.txt contains the text 12345?text = File.read('data.txt')
puts text.lengthWhat will be the output of this Ruby code if the file data.txt contains the text 12345?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Read file content
File.read('data.txt')returns the string "12345".Step 2: Calculate string length
text.lengthreturns the number of characters, which is 5.Final Answer:
5 -> Option BQuick Check:
String length of "12345" is 5 = B [OK]
Quick Trick: Use .length on string from File.read to get character count [OK]
Common Mistakes:
- Expecting output to be file content instead of length
- Thinking length method does not exist on string
- Confusing output with file size
Master "File IO" in Ruby
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