本程序基于24点小游戏进行编写，在能实现24点基本游戏的基础上为其添加了产生题库，难度等级排序，查看所有的答题历史，更新题库等功能。详细操作和功能见上传文件的文档-The program is based on 24 point game written in basic, can achieve 24 basic game to add the item bank, the difficulty level sort, all answer history, update the databa