Introduction - If you have any usage issues, please Google them yourself
The program is a TICTACTOE game, the board is 3*3, the 3 pieces together that is to win. When the input parameters, if the input of the number than the border or in the place where there is a piece of re input, then prompted an error, the requirements of re input.
1.2 curriculum design requirements
(1) the required data and the corresponding functions are encapsulated in the class, and the program is structured to rewrite the program.
(2) to expand the board into 4*4.
(3) the statistical result and print output.
(4) choose to do: make the game more vivid. (or equal)