2.2.1 程序功能简介

该程序是TICTACTOE游戏，棋盘为3*3，3个棋子连起来即为赢。输入参数时，若输入的数字超出边界在已有棋子的地方再输入，则提示出错，要求重新输入。

2.2.2程序设计要求

（1）　　将程序改写成类；

（2）　　将棋盘扩充成4*4；

（3）　　统计输赢结果并打印输出；

（4）　　选做：使游戏更生动（输赢条件相同）。

2.2.3课程设计说明

（1）　　棋盘可用数组来定义，如Board[4][4]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}

（2）　　题目要求把源程序封装在类中，需要编写一个类来封装所有相关函数和变量。同时对main主函数进行改写，以完成题目的要求。

-2.2.1 Program Features The program is TICTACTOE games, board 3* 3,3 chess is to win together. When the input parameters, beyond the boundaries of the digital input if there are pieces in place to re-enter, then prompts an error, requiring re-enter. 2.2.2 The program design requirements (1) to rewrite the program into categories　(2) The board expanded into 4* 4　(3) and print out the results of statistical winning or losing　(4) elected to do: make the game more vivid (win or lose the same conditions ). 2.2.3 Course Design Descr iption (1) the board can be used to define an array, such as the Board [4] [4] = {0,0,0,0,0,0,0,0,0,0,0,0,0 , 0,0,0} (2) subject to the requirements of the source package in the class, you need to write a class to encapsulate all relevant functions and variables. While the main primary function rewritten in order to complete the requirements of the subject.