本程序拥有键入、输出、查询和修改学生成绩。其中键入包含学生姓名、学号、班级和成绩等信息，可按班级和学号查询学生成绩，亦可按学号修改或删除学生信息。同时能够查出不及格学生信息，还能够根据学生成绩，顺序或倒叙排序。-This program has a type, output, query and modify student achievement. Type which contains student name, student number, class and achievement and other information, according to a query classes and student number of student achievement, but also by the school to modify or delete student information. At the same time able to identify failing student information, but also based on student achievement, sort order, or flashbacks.