1.RLE.LZW算法实现数据压缩；2.商品管理系统：商品信息的添加.删除.查询.修改.指定位置插入.按金额排序。3.网络通信编程：使用socket接口实现一个网络通信软件。4.图书管理系统：结合MySQL数据库设计而成的数据库管理系统，可以对图书信息进行添加、删除、修改、查询等操作。-The 1.RLE.LZW algorithm for data compression　merchandise management system: Product information Add deleted. Query. Modify the designated location to insert sorted by the amount. 3 Network Communication Programming: Use socket interface to implement a network communication software. Library management system: combined from the database management system MySQL database design, you can book information to add, delete, modify, query and other operations.