time_format.rb

#!/usr/bin/env ruby
# Function to print strftime results
def print_strftime_formats(a, current_date)
  a.each do |format|
    b = "%#{format}"
     output = current_date.strftime(b)
     puts "t.strftime('#{b}'), => #{output}"
  end
end

a = ('a'..'z').to_a
A = ('A'..'Z').to_a

current_date = Time.now

# calling and printing strftime results on current date
puts "DateTime: #{current_date}\n"
puts "\n\nFor a to z"
print_strftime_formats(a, current_date)
puts "\n\nFor A to Z"
print_strftime_formats(A, current_date)