这是一个用c++实现的学生成绩管理系统，可实现的功能包括：

1.输出所有学生的成绩记录

2.增加学生成绩记录

3.删除学生成绩记录

4.查询学生成绩记录

5.退出学生成绩管理系统-This is a c++ achieve student performance management system, enabling features include: (1) output for all students to increase student achievement recorded record 2 3 4 queries to delete records of student achievement student achievement recorded 5 Exit student performance management. .. system