C++ Questions!! :(

Okay I read some chapters in C++, but i don't see any hack related... Just wondering after i finish the Tut for C++ will I understand everything that people post in source codes? So far i learned the basic structure of a program like #include<iostream>, strings, constants, int main, int, bytes and stuff, going to operators next. I mean I heard only 10% of C++ is used for hacking... so please after i finish C++, will I understand the source code long posted and such?

you will understand it a lot better, but most of the functionality of the hack comes from direct3d functions in c++, so after you learn c++ start learning the direct3d library's and how they work.