Create calculator.rb

calculator.rb

@@ -0,0 +1,49 @@
+
+
+puts "Welcome to the operator program! which operator would you like to use?"
+
+operatormenu =["add(+)","subtract(-)","multiply(*)","divide(/)"]
+
+def printmenu(arr)
+4.times do |i|
+puts "#{i+1}. #{arr[i]}"
+end
+end
+
+printmenu(operatormenu)
+
+puts "which operation would you like to carry on?"
+x = gets.chomp
+options = ["add", "+","subtract","-","multiply","*","divide","/"]
+if !options.include?(x)
+  puts "wrong input! try again!"
+x = gets.chomp
+end
+
+
+puts "what numbers would you like to calculate"
+a= gets.chomp.to_i
+while !options.include?(a==Integer)
+  puts "wrong input! Please enter an Integer .. try again!"
+  a=gets.chomp.to_i
+end
+b= gets.chomp.to_i
+while !options.include?(b==Integer)
+  puts "wrong input! Please enter an Integer .. try again!"
+end
+
+def operator(m,n,y)
+case y 
+when "add","+"
+  return "the result is #{m+n}"
+when "subtract","-"
+  return "the result is #{m-n}"
+when "multiply","*"
+  return "the resutl is #{m*n}"
+when "divide","/"
+  return "the result is #{m/n}"
+end
+end
+
+puts operator(a,b,x)
+