Class declaration syntax in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a class named Car.

Ruby

class [1]
end

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

Acar

BCar

Cvehicle

DClassCar

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase names for classes.

Using names that do not start with a capital letter.

The class name must start with a capital letter. Car is the correct class name.

2fill in blank

medium

Complete the code to define a method named start inside the class.

Ruby

class Car
  def [1]
    puts 'Car started'
  end
end

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

Arun

Bgo

Cbegin

Dstart

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different method name than requested.

Capitalizing method names (they should be lowercase).

The method name should be start as requested.

3fill in blank

hard

Fix the error in the class declaration by completing the blank.

Ruby

class [1]
  def initialize
    @speed = 0
  end
end

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

Avehicle

Bcar

CCar

Dspeed

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase class names.

Using variable names instead of class names.

Class names must start with a capital letter. Car is correct.

4fill in blank

hard

Fill both blanks to create a class Bike with a method ride that prints 'Riding'.

Ruby

class [1]
  def [2]
    puts 'Riding'
  end
end

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

ABike

BCar

Cride

Dstart

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up class and method names.

Using incorrect capitalization.

The class name is Bike and the method name is ride as requested.

5fill in blank

hard

Fill all three blanks to create a class Plane with a method fly that prints the speed stored in @speed.

Ruby

class [1]
  def [2]
    puts "Flying at #{ [3] } km/h"
  end
end

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

APlane

Bfly

C@speed

Dspeed

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the @ in instance variable.

Using wrong method or class names.

The class is Plane, method is fly, and the instance variable is @speed.