calc.rb

begin
  puts "Please enter your first number."
  a = gets.chomp

  puts "Please enter your second number."
  b = gets.chomp
  
  puts "Here are your instructions...."
  puts "Enter + if you want to add the numbers."
  puts "Enter - if you want to subtract the numbers."
  puts "Enter * if you want to multiply the numbers."
  puts "Enter / if you want to divide the numbers."

  operation = gets.chomp

  if operation == "+" 
    puts a.to_i + b.to_i
  elsif operation == "-" 
    puts a.to_i - b.to_i 
  elsif operation == "*" 
    puts a.to_i * b.to_i 
  elsif operation == "/" 
    puts a.to_f / b.to_f
  end

  puts "Would you like to calculate more numbers?"
  puts "Enter y for Yes and n for No"
  
  request = gets.chomp

  if request == "y"
    puts "Here we go again!"
  else
    puts "Good bye."
  end
end until request == "n"