Still working with stacks and have gotten use to working with them but i have encountered another problem. I have to input an expression as a string and push the numbers in it on the stack (example: 54 - 34 + 4 * 94 ) What I cant figure out is how to push the things onto the stack properly. If I push everything on there character by character it will push 5 then 4 on there instead of pushing 54. How can I tell it to that each item to be pushed is seperated by a space....