Challenge 1: Capture and Call a Block — Solution

def repeat_message(times, &block)
  (1..times).each do |n|
    block.call(n)
  end
end

repeat_message(3) do |n|
  puts "Attempt #{n}"
end

=begin
Output:
Attempt 1
Attempt 2
Attempt 3

Notes:
- &block in the method signature captures whatever block is passed to
  repeat_message and turns it into a real Proc object, stored in the
  local variable block.
- block.call(n) invokes that Proc explicitly, passing the current
  iteration number as an argument each time through the loop.
- The block itself, { |n| puts "Attempt #{n}" } written with do...end at
  the call site, receives n as its own block parameter and interpolates
  it into the message.
=end