[Solved] What will be the output of this Ruby code?module Greetings def self.say_hello(name) "Hello, #{name}!" end end puts Greetings.say_hello('Alice') | Ruby

Ruby - Modules and Mixins

What will be the output of this Ruby code?

module Greetings
  def self.say_hello(name)
    "Hello, #{name}!"
  end
end

puts Greetings.say_hello('Alice')

AError: undefined method say_hello

BHello, #{name}!

CHello, Alice!

DGreetings.say_hello

Step-by-Step Solution

Solution:

Step 1: Identify method call and string interpolation
The method say_hello is a module method called with Greetings.say_hello('Alice'). It returns a string with #{name} interpolated.
Step 2: Evaluate the output
The interpolation replaces #{name} with "Alice", so the output is "Hello, Alice!".
Final Answer:
Hello, Alice! -> Option C
Quick Check:
String interpolation works in module methods = C [OK]

Quick Trick: String interpolation works normally in module methods [OK]

Common Mistakes:

Master "Modules and Mixins" in Ruby

9 interactive learning modes - each teaches the same concept differently

More Ruby Quizzes

What will be the output of this Ruby code?