Parameters with default values in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a method with a default parameter value.

Ruby

def greet(name = [1])
  puts "Hello, #{name}!"
end

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

A"name"

BGuest

Cname

D"Guest"

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to put quotes around the default string value.

Using a variable name instead of a string literal.

The default value for the parameter name should be a string, so it must be enclosed in quotes.

2fill in blank

medium

Complete the code to call the method with and without the default parameter.

Ruby

def greet(name = "Guest")
  puts "Hello, #{name}!"
end

greet([1])
greet

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

AAlice

B"Alice"

Cname

D"name"

Attempts:

3 left

💡 Hint

Common Mistakes

Calling the method with a name without quotes.

Confusing the method call syntax.

When calling the method with a specific name, it must be a string with quotes.

3fill in blank

hard

Fix the error in the method definition with a default parameter.

Ruby

def add_numbers(a, b = [1])
  a + b
end

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

Anil

B"0"

C0

Da

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string "0" instead of number 0 as default.

Using a variable name as default value.

The default value for b should be a number, so 0 is correct.

4fill in blank

hard

Fill both blanks to create a method with two parameters, one with a default value.

Ruby

def order(item, quantity = [1])
  puts "Order: #{quantity} #{item}(s)"
end

order("apple", [2])

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

A1

B"apple"

C5

Dquantity

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of a number for quantity.

Confusing parameter names with values.

The default quantity is 1, and the method call uses 5 as the quantity.

5fill in blank

hard

Fill all three blanks to define a method with default parameters and call it correctly.

Ruby

def book_flight(destination = [1], seats = [2])
  puts "Booking #{seats} seats to #{destination}."
end

book_flight([3])

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

A"Paris"

B2

C"Tokyo"

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of parameters.

Using numbers as strings or vice versa.

The method defaults to "Paris" and 2 seats, but the call overrides the destination to "Tokyo".