String interpolation with #{} in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to insert the variable name inside the string using interpolation.

Ruby

name = "Alice"
message = "Hello, [1]!"
puts message

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

A"${name}"

B"name"

C'#{name}'

D"#{name}"

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes instead of double quotes for interpolation.

Putting the variable name as a string without #{ }.

Using ${} which is not Ruby syntax.

In Ruby, string interpolation uses #{variable} inside double quotes. So "#{name}" inserts the value of name.

2fill in blank

medium

Complete the code to include the result of 5 + 3 inside the string using interpolation.

Ruby

result = "The sum is [1]"
puts result

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

A"#{5 + 3}"

B"5 + 3"

C'#{5 + 3}'

D"${5 + 3}"

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes which do not interpolate.

Putting the expression as a string without #{ }.

Using ${} which is not Ruby syntax.

Ruby evaluates expressions inside #{ } in double-quoted strings, so "#{5 + 3}" becomes "8".

3fill in blank

hard

Fix the error in the code to correctly interpolate the variable age inside the string.

Ruby

age = 30
puts "I am [1] years old."

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

A"age"

B#{age}

Cage

D'#{age}'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the variable name without #{ }.

Using single quotes which do not interpolate.

Putting the variable name as a string.

Interpolation requires #{variable} inside double quotes. So #{age} inserts the value of age.

4fill in blank

hard

Fill both blanks to create a greeting that includes the first_name and last_name variables using interpolation.

Ruby

first_name = "John"
last_name = "Doe"
greeting = "Hello, [1] [2]!"
puts greeting

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

A#{first_name}

Bfirst_name

C#{last_name}

Dlast_name

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names without #{ }.

Using single quotes which do not interpolate.

Use #{variable} inside double quotes to insert variable values. So #{first_name} and #{last_name} insert the names.

5fill in blank

hard

Fill all three blanks to create a sentence that includes the city, temperature, and unit variables using interpolation.

Ruby

city = "Paris"
temperature = 22
unit = "C"
weather = "The temperature in [1] is [2]°[3]."
puts weather

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

A#{city}

B#{temperature}

C#{unit}

Dtemperature

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names without #{ }.

Using single quotes which do not interpolate.

Using plain variable names without interpolation.

Use #{variable} inside double quotes to insert variable values. So #{city}, #{temperature}, and #{unit} insert the correct values.