[EricH]

David,

If you truly want to build from scratch, then that means that you will need to develop your own programming language. Every time you use C++ or any other language, you're putting pieces together that have already been made for you. (Similarly, building a robot completely from scratch means going at least to the ore, if not digging out the ore.)

You want to further your education. But with the grades that you posted in another thread, I would suggest concentrating on your schoolwork and furthering your education in your free time. You have your whole life to learn to build libraries from nothing. But at this time, you have better things to do.

Use the libraries. Then go back after you're out of high school (and maybe college) and rewrite them from scratch. If you haven't already done so in a class, of course. Maybe you'll figure out that not using them was a mistake at some point...