I am writing a stack program to evaluate infix expressions and I have everything done and ready to go except one hurdle I cannot seem to pass. Let's say I have a string test; now I read in 4 + 3 5 6 - * into the string. How do i operate on the string character by character so that each character can have an operation performed on it (and yes it has to have spaces between each char/int). I know it's probably an easy answer but I'm stumped. Thanks ya'll!