[Solved] What is the output of this Ruby code?def greet(name = "Guest") "Hello, #{name}!" end puts greet puts greet("Alice") | Ruby

Ruby - Methods

What is the output of this Ruby code?

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

puts greet
puts greet("Alice")

AHello, Guest! Hello, Alice!

BHello, ! Hello, Alice!

CHello, Guest! Hello, Guest!

DError: missing argument

Step-by-Step Solution

Solution:

Step 1: Analyze method calls
Calling greet without argument uses default "Guest". Calling greet("Alice") uses "Alice".
Step 2: Determine output strings
First call outputs "Hello, Guest!". Second call outputs "Hello, Alice!".
Final Answer:
Hello, Guest!\nHello, Alice! -> Option A
Quick Check:
Default parameter used when argument missing [OK]

Quick Trick: Default parameter fills missing argument in call [OK]

Common Mistakes:

MISTAKES

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