[Solved] Consider this Ruby method:def format_name(first, last = "Smith", middle = nil) if middle "#{first} #{middle} #{last}" else "#{first} #{last}" end endWhat will format_name("John") return? | Ruby

Ruby - Methods

Consider this Ruby method:

def format_name(first, last = "Smith", middle = nil)
  if middle
    "#{first} #{middle} #{last}"
  else
    "#{first} #{last}"
  end
end

What will format_name("John") return?

A"John nil Smith"

B"John Smith"

C"John Smith"

DError due to missing middle argument

Step-by-Step Solution

Solution:

Step 1: Analyze default parameters
last defaults to "Smith", middle defaults to nil.
Step 2: Evaluate method call format_name("John")
Only first is provided, last = "Smith", middle = nil. The else branch runs, returning "John Smith".
Final Answer:
"John Smith" -> Option B
Quick Check:
Default parameters fill missing arguments; nil triggers else branch [OK]

Quick Trick: Default nil triggers else branch in conditional [OK]

Common Mistakes:

Master "Methods" in Ruby

9 interactive learning modes - each teaches the same concept differently

More Ruby Quizzes

Consider this Ruby method: