I'm reading through "Jumping into C++" and doing the practice problems. After the chapter on switches and enums one of the practice problems is to create a tic tac toe game. I've looked all through the previous chapters but I can't find a way to build a game board with spaces that can be filled with an X or an O. I don't really understand the concept if an enumerate which may be my problem. I'm not asking for the solution, just where to look so that I have the knowledge to solve it myself. Thank you for your help!