I need help with this C++ program

Create an interactive tic tac toe game for two players. Use a 2D array to store the state of the board. One player should play X and the other O. Let the players take turns playing and announce whose turn it is each time. The board should be rendered on the screen in between moves so that the user can choose a good move. Perform input validation to make sure the user chose a move that is valid. For example, it should not be possible to choose a place that already has an X or an O on it. Make sure your program knows when to announce that there is a winner If you want to practice, you can play the game online http://playtictactoe.org/