Class declaration syntax in Ruby - Cheat Sheet & Quick Revision

Recall & Review

beginner

What keyword is used to declare a class in Ruby?

The keyword <strong>class</strong> is used to declare a class in Ruby.

beginner

How do you define a simple class named <code>Car</code> in Ruby?

You write:<br><pre>class Car
end</pre>

beginner

What keyword ends a class declaration in Ruby?

The keyword <strong>end</strong> is used to close the class declaration.

beginner

Can a Ruby class contain methods inside it? How?

Yes, methods are defined inside a class using the <strong>def</strong> keyword.<br>Example:<br><pre>class Car
  def start
    puts "Car started"
  end
end</pre>

beginner

What is the purpose of a class in Ruby?

A class is like a blueprint to create objects. It groups related methods and data together.

Which keyword starts a class declaration in Ruby?

A module

B class

C def

D object

The class keyword is used to declare a class.

How do you end a class declaration in Ruby?

A finish

B stop

C end

D close

The end keyword closes the class declaration.

What is the correct way to define a method inside a class?

A function method_name ... end

B func method_name ... end

C method method_name ... end

D def method_name ... end

Ruby uses def to define methods.

Which of these is a valid class declaration in Ruby?

A class Dog end

B def Dog end

C module Dog end

D object Dog end

Only class Dog ... end declares a class.

What does a class in Ruby represent?

A A blueprint for creating objects

B A variable

C A method

D A data type like integer

A class is a blueprint to create objects with shared behavior.

Explain how to declare a class in Ruby and include a simple method inside it.

Think about the keywords you use to start and end classes and methods.

What is the role of a class in Ruby programming?

Consider how classes help organize code and create things.