gistfile1.txt

def show_menu
  puts "Calculator"
  puts"-" * 40
  puts "[a] - Addition"
  puts "[m] - Multiplication"
  puts "[s] - Subtraction"
  puts "[d] - Division"
  puts "[r] - Square Root"
  puts "[e] - Exponent"
  puts "[f] - Finance Calculation"
  puts "[t] - Trip Calculation"
  puts "[q] - Quit"
  puts"-" * 40
  print "Enter your selection:"
end

show_menu
menu_choice = gets.chomp.downcase
until menu_choice == 'q'
   case menu_choice

    when'a'
      def addition_function
        puts "Which numbers would you like to add?"
        n1 = gets.chomp.to_i
        n2 = gets.chomp.to_i
        answer = n1 + n2
        puts "The sum is: #{answer}"
      end
      addition_function
       show_menu
       end
       end