基于MFC的五子棋小程序，没有人机对战，有重新开始，悔棋，保存文件，打开文件的简单功能，适合MFC初学者看-Backgammon MFC-based applet, no man-machine war, there is a fresh start, undo, save the file, open a simple function of the file, look for MFC beginners