Hi, I'm working on writing my own calculator, just a simple basic programming exercise to help develop my skills. I've already figured out one way to do it but it's a really awkward way to have the user input the function they want calculated. What I really want is for someone to be able to input say "1 + 2" and have it output "3" or input "1 + 3 + 1" and output "5". The thing I'm having trouble figuring out is how exactly to identify and pull out the operators used, and then how to identify and pull out the integers entered so they can be passed to a function. Any help on this first step would be fantastic. Thanks