VC++界面编程实现对SQL数据库中学生成绩信息的查询，按平均成绩排序，删除，添加，修改显示全部学生信息等功能。-VC++ interface programming of the SQL database of student performance information query, according to the average score sort, delete, add, modify the display of all the functions of student inf

DB-library编程window下的VC和SOL server结合开发而成使用了DB-library库-DB- library programming window on development and combination of VC and SQL server USES the DB- library library