https://github.com/QuinnBast/TicTacToe- ... TacToe.cpp
I have commented my file so hopefully you learn something! If you have any questions feel free to ask me questions.
For those of you who don't have a C++ compiler handy I'm sorry but you can't play tic tac toe

Note: I could have used a class but seeing his previous code I don't think he knows what classes are yet.