Queues - Cara Comfort - Calculator

Queues - Cara Comfort- Calculator

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+def add(num_one, num_two)
+  return num_one + num_two
+end
+
+def subtract(num_one, num_two)
+  return num_one - num_two
+end
+
+def multiply(num_one, num_two)
+  return num_one * num_two
+end
+
+def divide(num_one, num_two)
+  if num_two == 0
+    return "#{num_one} is not divisible by 0"
+  else
+    return num_one / num_two
+  end
+end
+
+def convert_to_num(num)
+  until num.to_f.to_s == num || num.to_i.to_s == num
+    print "Please input a number: "
+    num = gets.chomp
+  end
+
+  if num.include? "."
+    return num.to_f
+  else
+    return num.to_i
+  end
+end
+
+
+print "\nWhat operation would you like to perform? "
+operation = gets.chomp
+possible_operators = ["add", "+", "subtract", "-", "multiply", "*", "divide", "/"]
+until possible_operators.include?(operation)
+  print "Please tell me to add (+), subtract (-), multiply (*) or divide (/): "
+  operation = gets.chomp
+end
+
+print "\nWhat is your first number? "
+num_one = convert_to_num(gets.chomp)
+
+print "\nWhat is your second number? "
+num_two = convert_to_num(gets.chomp)
+
+case operation
+when "add", "+"
+  puts add(num_one, num_two)
+when "subtract", "-"
+  puts subtract(num_one, num_two)
+when "multiply", "*"
+  puts multiply(num_one, num_two)
+when "divide", "/"
+  puts divide(num_one, num_two)
+end

calculator.rb

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+def add(num_one, num_two)
+  return num_one + num_two
+end
+
+def subtract(num_one, num_two)
+  return num_one - num_two
+end
+
+def multiply(num_one, num_two)
+  return num_one * num_two
+end
+
+def divide(num_one, num_two)
+  if num_two == 0
+    return "#{num_one} is not divisible by 0"
+  else
+    return num_one / num_two
+  end
+end
+
+def convert_to_num(num)
+  until num.to_f.to_s == num || num.to_i.to_s == num
+    print "Please input a number: "
+    num = gets.chomp
+  end
+
+  if num.include? "."
+    return num.to_f
+  else
+    return num.to_i
+  end
+end
+
+
+print "\nWhat operation would you like to perform? "
+operation = gets.chomp
+possible_operators = ["add", "+", "subtract", "-", "multiply", "*", "divide", "/"]
+until possible_operators.include?(operation)
+  print "Please tell me to add (+), subtract (-), multiply (*) or divide (/): "
+  operation = gets.chomp
+end
+
+print "\nWhat is your first number? "
+num_one = convert_to_num(gets.chomp)
+
+print "\nWhat is your second number? "
+num_two = convert_to_num(gets.chomp)
+
+case operation
+when "add", "+"
+  puts add(num_one, num_two)
+when "subtract", "-"
+  puts subtract(num_one, num_two)
+when "multiply", "*"
+  puts multiply(num_one, num_two)
+when "divide", "/"
+  puts divide(num_one, num_two)
+end