Create calculator.rb

calculator.rb

@@ -0,0 +1,96 @@
+# prints title and operation options
+puts "Are you ready to Calculate!!!"
+puts "Operations:\nadd(+)\nsubtract(-)\nmultiply(*)\ndivide(/)\nexponent(^)\nmodulo(%)\n"
+# collects operation type from user
+print "Choose an operation: "
+operation = gets.chop.downcase
+# list of acceptible operations
+operators = ["+", "add", "-", "subtract", "*", "multiply", "/", "divide", "exponent", "^", "modulo", "%", "()"]
+
+# confirms if user entered a  valid operation
+until operators.include?(operation)
+  puts "Please enter a valid operation"
+  operation = gets.chop.downcase
+end
+
+# collects two numbers for calculation
+puts "What are the two numbers you want to use?"
+print "Enter a number: "
+value_1 = gets.chomp
+# confirms user has entered a valid number
+until value_1.to_s == value_1.to_i.to_s || value_1.to_f.to_s == value_1.to_s
+  print "Please enter a valid number: "
+  value_1 = gets.chomp
+end
+
+print "Enter a second number: "
+value_2 = gets.chomp
+# confirms user has entered a valid number
+until value_2.to_s == value_2.to_i.to_s || value_2.to_f.to_s == value_2.to_s
+  print "Please enter a valid number: "
+  value_2 = gets.chomp
+end
+
+# methods used
+def add(num1, num2)
+  num1 + num2
+end
+
+def subtract(num1, num2)
+  num1 - num2
+end
+
+def multiplying(num1, num2)
+  num1 * num2
+end
+
+def dividing(num1, num2)
+  num1 / num2
+end
+
+def exponential(num1, num2)
+  num1 ** num2
+end
+
+def mod(num1, num2)
+  num1 % num2
+end
+
+# checks for floats
+if value_1.split('').include?('.') || value_2.split('').include?('.')
+  value_1 = value_1.to_f
+  value_2 = value_2.to_f
+else
+  value_1 = value_1.to_i
+  value_2 = value_2.to_i
+end
+
+# calculate and print the result for user
+if operation == "+" || operation == "add"
+   solution = add(value_1, value_2)
+   puts "#{value_1} + #{value_2} = #{solution}"
+
+elsif operation == "-" || operation == "subtract"
+   solution = subtract(value_1, value_2)
+   puts "#{value_1} - #{value_2} = #{solution}"
+
+elsif operation == "*" || operation == "multiply"
+   solution = multiplying(value_1, value_2)
+   puts "#{value_1} * #{value_2} = #{solution}"
+
+elsif operation == "/" || operation == "solution"
+    if value_1 == 0 || value_2 == 0
+      solution = 0
+    else
+      solution = dividing(value_1, value_2)
+    end
+    puts "#{value_1} / #{value_2} = #{solution}"
+
+elsif operation == "^" || operation == "exponent"
+  solution = exponential(value_1, value_2)
+  puts "#{value_1}^#{value_2} = #{solution}"
+
+else operation == "%" || operation == "modulo"
+  solution = mod(value_1, value_2)
+  puts "#{value_1} % #{value_2} = #{solution}"
+end