Which of the following is the correct Ruby syntax to open a file named log.txt for appending?

easy📝 Syntax Q3 of 15

Ruby - File IO

Which of the following is the correct Ruby syntax to open a file named log.txt for appending?

AFile.open('log.txt', 'a')

BFile.open('log.txt', 'r')

CFile.open('log.txt', 'w')

DFile.open('log.txt', 'rw')

Step-by-Step Solution

Solution:

Step 1: Identify append mode syntax
In Ruby, 'a' mode opens a file for appending, adding data at the end.
Step 2: Check other options
'r' is read-only, 'w' is write (overwrite), 'rw' is invalid mode string.
Final Answer:
File.open('log.txt', 'a') -> Option A
Quick Check:
Append mode syntax = 'a' = C [OK]

Quick Trick: Use 'a' to add data at file end [OK]

Common Mistakes:

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