File.write for writing in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to write the string 'Hello' to a file named 'greeting.txt'.

Ruby

File.[1]('greeting.txt', 'Hello')

Drag options to blanks, or click blank then click option'

Awrite

Bread

Copen

Dclose

Attempts:

3 left

💡 Hint

Common Mistakes

Using File.read instead of File.write

Using File.open without a block

Trying to use File.close directly

The File.write method writes the given string to the specified file.

2fill in blank

medium

Complete the code to write 'Ruby is fun!' to a file named 'fun.txt'.

Ruby

File.[1]('fun.txt', 'Ruby is fun!')

Drag options to blanks, or click blank then click option'

Aread

Bappend

Cwrite

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using File.append which adds instead of overwriting

Using File.read which only reads files

Using File.delete which removes files

File.write writes the string to the file, replacing any existing content.

3fill in blank

hard

Fix the error in the code to write 'Data' to 'data.txt'.

Ruby

File.[1]('data.txt', 'Data')

Drag options to blanks, or click blank then click option'

Aread

Bwrite

Cgets

Dputs

Attempts:

3 left

💡 Hint

Common Mistakes

Using File.read which only reads files

Using File.puts which does not exist

Using File.gets which reads input

File.write is the correct method to write data to a file. puts and gets are for console input/output.

4fill in blank

hard

Fill both blanks to write the string length of 'hello' to 'length.txt'.

Ruby

File.[1]('length.txt', 'hello'.[2].to_s)

Drag options to blanks, or click blank then click option'

Awrite

Bread

Clength

Dsize

Attempts:

3 left

💡 Hint

Common Mistakes

Using File.read instead of File.write

Using length instead of size (both work but only one is correct here)

Confusing read and write methods

File.write writes to the file, and size returns the length of the string.

5fill in blank

hard

Fill all three blanks to write uppercase words longer than 3 letters from the list to 'output.txt'.

Ruby

words = ['cat', 'elephant', 'dog', 'lion']\nFile.write('output.txt', words.select { |word| word.[2] [3] 3 }.map { |word| word.[1] }.join("\n"))

Drag options to blanks, or click blank then click option'

Aupcase

Blength

C>

Ddowncase

Attempts:

3 left

💡 Hint

Common Mistakes

Using downcase instead of upcase

Using < instead of > for length comparison

Using read instead of write for file output

upcase converts words to uppercase, length gets the word length, and > checks if length is greater than 3.