Block syntax (do..end and curly braces) in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers using a block with curly braces.

Ruby

5.times [1] puts "Hello" [2]

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

A( )

Bdo end

C{ }

D[ ]

Attempts:

3 left

💡 Hint

Common Mistakes

Using do..end instead of curly braces for single-line blocks.

Using parentheses instead of block delimiters.

In Ruby, blocks with curly braces use { } syntax for single-line blocks.

2fill in blank

medium

Complete the code to print numbers using a block with do..end syntax.

Ruby

3.times [1] puts "Hi" [2]

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

Ado end

B{ }

C( )

D[ ]

Attempts:

3 left

💡 Hint

Common Mistakes

Using curly braces for multi-line blocks.

Using parentheses instead of block delimiters.

The do..end syntax is used for multi-line or more readable blocks in Ruby.

3fill in blank

hard

Fix the error in the block syntax to correctly print each number.

Ruby

4.times [1] |i| puts i [2]

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

A{

B(

C[

Ddo

Attempts:

3 left

💡 Hint

Common Mistakes

Using { without the matching }.

Using parentheses instead of block delimiters.

The do keyword starts a block that can take parameters like |i| in Ruby.

4fill in blank

hard

Fill both blanks to create a block that prints squares of numbers.

Ruby

5.times [1] |n| puts n[2]2 [3]

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

Ado

B**

Cend

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using * instead of ** for exponentiation.

Forgetting to close the block with end.

Use do to start the block, ** for exponentiation, and end to close the block.

5fill in blank

hard

Complete the code to create a block that prints doubled numbers using curly braces.

Ruby

3.times { |x| puts x [1] 2 }

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

A{

B*

C}

D**

Attempts:

3 left

💡 Hint

Common Mistakes

Using ** instead of * for multiplication.

Forgetting to close the block with }.

Use { and } to start and end the block, and * to multiply x by 2.