Tic Tac Toe

Try playing this game!
At the start, enter if you want to be X or O. Then choose a square. The values of the squares are as follows:

1 2 3
4 5 6
7 8 9

Make sure you enter an integer!

After you choose your square, the computer will choose a square. When the computer is done, hit space to begin the next turn!

Have fun!
Known bugs:
-Computer's choice can actually change what your choice was
-Does not detect when someone wins or loses yet