Student achievement ranking system based on C language design

be based on C Language design student performance ranking system

One 、 Demand analysis

Purpose of writing ： Through the investigation and analysis of user needs , Write the requirements analysis document as the basic criteria of project design , And the manual for system analysis as a system analyst and testing as a tester

Requirements overview ： Design a student achievement ranking system , It can provide the following functions ： Enter student information and save Browse student information Search for student information Modify student information and save Add student information Statistics and calculation of student information

Requirement specification ： The main functions of this system ：

1. Add a new member , Realize the input of student information .
2. Delete student information . When you need to delete student information , Free up the database space it occupies , You can select the record to delete in the list , Then click delete. If you confirm the deletion, select OK to delete the selected record .
3. Modify student information , For some reason, there may be errors in recording student information , Student information needs to be modified . Select the member information to be modified in the main window of the student information system to modify .
4. Show student information , After deleting student information and adding student information successfully , Enter the display option to update the student information record , Display the latest record of student information .
5. Name search information , It can display the current student information , Use your name to view student information .
6. Sort students' grades , Statistical functions such as total score calculation .

To sum up, this system can realize scientific and automatic management of student achievement information , It includes displaying the basic information of students , And realize the addition of student information 、 Delete 、 Show 、 Statistics and retrieval . After debugging , The program performance is good .

overall design

The design drawing of the overall function part is as follows , Specific main menu function options include ：

• Student information input
• Student information output display
• Curriculum
• Student information added
• Student information search
• Delete student information
• Student information modification
• Student grade information sorting
• Student information statistical calculation
• sign out

Detailed design

Purpose of writing

According to the project outline design specification , Based on the project outline design , Design the system in detail , In order to code the program in the next step .

Detailed design

Course structure

Including course name and course grades .

Course class

Private members include ： Course structure array , Number of courses , The sum of the results , Average score

Public members include ： Total score , Average score calculation , Course information display , Add courses , Delete course , The input and output display of grades .

Student class

Private members include ： Student's name , Student number , class , Course etc.

Public members include ： The input and output of data

Student information list class

Mainly for the operation of linked lists , lookup , Delete , modify , Sort , Statistical calculation and output display

Two 、 Commissioning and operation

Login screen

Menu interface

Information entry interface

Information output display interface

Information insertion interface

Information search interface

Information deletion interface

Information modification interface

Score sorting interface