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按分段统计学生成绩：要求按 90－100、80－89、70－79、60－69、60以下五档分别统计各分数段人数，输入为负数时结束。（分别用if-else和switch）(According to the partition of student achievement statistics: according to the requirements of 90 to 100, 8089, 70-79, 6069, 60 the following five respectively statistics the number of segments in each fraction, input is negative end. (respectively if-else and switch))

说明：  c成绩管理系统 输入学生信息 显示学生信息 查询学生信息（1）按学号查询（2）按姓名查询（3）按性别查询 4.更新学生信息 5.删除学生信息 6.计算学生成绩（1）计算总分（2）计算平均分 7.保存到文件 8.退出(c performance management system Enter student information Student Information Display Discover Student Information (1) according to Student ID check (2) by name query (3) by sex inquiry         4. Update Student Information         5. Delete student information         6. Calculate student achievement (1) calculate the total score (2) calculate the average score         7. Save the file         8. Exit )

在线教育系统，可以学习一些基础知识等等。(Online education system can learn some basic knowledge and so on.)

直流电机调速的LQR输出反馈控制器设计和仿真(DC motor speed control LQR output feedback controller design and simulation)

说明：  考试成绩管理系统，基于visual c++的简易考试成绩管理系统(Examination results management system, based on visual c++ test scores of Easy Management System)

说明：  面板平滑转换回归模型（PSTR）实现程序，matlab语言编写。(Matlab code allows estimating the parameters of a Panel Smooth Transition Regression (PSTR) model)

日程管理,可以选择日期，记录自己日程，并且能够提醒(schedule administrator)

学生信息管理系统。实现学生信息的增加，删除，管理等()

编程实现： 1）编写Student类，主要属性包括学号、姓名、成绩 2）编写Score类，主要属性包括：课程、成绩 3）模拟期末考试的成绩统计应用场景，要求可以输入所有成 绩（可以界面输入，也可以Excel导入），要求输出每门课程的所有学生的平均成绩。 4）输出某门课程的最高成绩，最低成绩 5）可以查询某个学生的所有成绩。(Programming: 1) preparation of the Student class, the main attributes include Student ID, name, performance 2) to prepare Score category, key attributes include: curriculum, achievement 3) statistical simulation of the final exam scenarios, requirements can enter all the results (you can input interface, you can also import Excel), required output of all students in each course grade point average. Highest score 4) output of a course, the lowest score 5) can check all the results of a student.)

mfc数据库学生成绩管理系统，用vc++6.0编的，很简单，适合初学者学习使用。(The mfc databases student achievement management system, compiled with vc++6.0 very simple, suitable for beginners to learn to use.)