First, don't repost.
Second, the answer you were previously given was correct: search for OCR and you'll find help (like this:
Neural Network OCR[
^]).
Third, before you tackle this you
definitely need to work on the basics. OCR is not a simple concept, and if you're having trouble creating header files for C++ as you other question alludes to then you need to start with something much simpler before attempting anything like this.