这是一个在TC2.0上开发的学生成绩管理系统，它有输入、输出、求和和查询等几项功能,过程明了，每一步都有菜单的引导.-This is a TC2.0 at grade students on the development of management systems, it has input, output, sum and number of inquiries, such as function, process and clear, every step of the guide men