Space - Faezeh

faezeh_calculator.rb

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+# When a user runs this program, the program should ask the user for the following things:
+
+# 1- a math operation
+# 2- a number for the math operation
+# 3- a second number for the math operation
+
+puts "I am glad you chose my calculator, because it's awesome!
+Which operator woudl you like to use?
+1. add(+)
+2. subtract(-)
+3. multiply(*)
+4. divide (/)
+Please choose one operator (name or symbol)"
+
+command = gets.chomp.downcase
+
+# operators = ["add", "+", "subtract", "-",
+#  "multiply", "*", "devide", "/"]
+
+# operators.each do |i|
+#   puts i + "(" #{i+1} + ")"
+# end
+
+until ["add", "+", "subtract", "-", "multiply", "*", "divide", "/", ].include?(command)
+  puts "What you entered is not an option! 
+  Please tell me to add (+), subtract (-) multiply (*) or devide (/)!"
+  command = gets.chomp.downcase
+end
+
+class Object
+  def is_number?
+    to_f.to_s == to_s || to_i.to_s == to_s
+  end
+end
+
+num_1_str = "first"
+until num_1_str.is_number?
+  puts "Please provide your first number:"
+  num_1_str = gets.chomp
+end
+num_1 = num_1_str.to_f
+
+num_2_str = "second"
+until num_2_str.is_number?
+  puts "Please provide your second number:"
+  num_2_str = gets.chomp
+end 
+num_2 = num_2_str.to_f
+
+case command
+when "add", "+"
+  puts "We're adding numbers"
+  puts "#{num_1} + #{num_2}: #{num_1 + num_2}"
+when "subtract", "-"
+  puts "We're subtracting numbers"
+  puts "#{num_1} - #{num_2}: #{num_1 - num_2}"
+when "multiply", "*"
+  puts "We're multiplying numbers"
+  puts "#{num_1} * #{num_2}: #{num_1 * num_2}"
+when "divide", "/"
+  puts "We're dividing numbers"
+  puts "#{num_1} / #{num_2}: #{num_1 / num_2}"
+end