Student Information System

Implemented features: Add students, list student information lists, delete students, exit, repeat check, sorting function, multi-subjects score input (average score, and total average score), save records, read records, modify the function; Features to be implemented: query ...
1 Create file, start writing, add student function, increase list student function, add delete student function, exit version 1.0
2 changes: Increase the number of duplicate check function, repair the display when the program terminates, output list function optimization, add student function optimization 1.1
3 Modifications: Add sorting function, delete function internal optimization, main function internal change, adding student function optimization 1.2
4 Modifications: Add multi-subject input, adding function optimization, new total and average results display, sorting function optimization, output function change 1.3, update to this, continue to study (^_^)
5 Modifications: Add Save function, read function, main program modification, add list clear function 1.4 Modify: New modifier function, new macro definition Max_score and Max_sno, easy to modify the program, modify all warning in the program, some bug fix 1.5
#include
#include
#include
#include
#define BOOL INT
#define TRUE 1
#define LEN sizeof (struct RYB)
#define DATAFILE "datafile. WL "
#define Max_score 150
#define MAX_SNO 200
struct Ryb * DEL_ITEM_RYB (struct RYB * head,int sno,int * del_message);
struct Ryb * CREATE_ITEM_RYB (struct ryb * head);
void Put_ryb (struct ryb * head);
BOOL Is_sno (struct RYB * head, int sno);
False
struct RYB * Order (struct Ryb * head, enum ordertype type, int fs);
BOOL Save_data (struct RYB * head);
struct Ryb * read_data (void);
void Clear (struct ryb * head);
void Amend_ryb (struct ryb * head, int sno);
struct RYB {//define linked list data structure
int Sno; School Number
Char name[9]; Name
int Chinese; Chinese
int math; Mathematical
int 中文版; English
int clanguage; C language
int Tiyu; Sports
int score; Grade
struct RYB *next;
};
Enum ordertype{//defining Sort enumeration types
Asc,desc
};
int main (void)
{
struct Ryb * head,* temp_h;//linked list header, temporary linked list
BOOL exit = FALSE;
Short int value;//accepts input information 1,2,3,4 1 means add information, 2 display information, 3 delete information, 4 sort, 5 exit
int sno, Del_message = 0;//number, delete function processing result (1 for delete succeeded, 0 for delete failed)
int pxfs,pxlx;//Sort By, sort type (mode Asc\desc);(Type 1 School number, 2 results)
Char is_quit;//indicates whether to exit, Y or Y to exit, otherwise do not exit
Char is_save;//Indicates whether data is saved, Y or y means save, otherwise not saved
Char is_read;//indicates whether to read data, Y or Y to read, otherwise not read
BOOL ssave;//Indicates whether the save succeeds, True indicates success, false means save failed
int Amend_sno; Indicates the number of the study to be modified
Head = (struct Ryb *) malloc (LEN);//Create initial linked list
Head->sno =0;//Chain list Assignment initial value
Head->next = NULL;
Do
{
printf ("Blue Student management System v1.6 (c language version) \ n");
printf ("① add student \n② show score list \n③ Delete student \n④ sort \n⑤ Save data \n⑥ Read Data \n⑦ modify \n⑧ exit system \ n");
printf ("Wait for Command input:");
Fflush (stdin);//emptying the keyboard buffer
scanf ("%d", &value);
if (value = = 1)//Add
{
Head = Create_item_ryb (head);//Add information
printf ("Entry information End!\n");
System ("pause");
}else if (value = = 2)//Display
{
Put_ryb (head); Display information
System ("pause");
}
else if (value = = 3)//delete
{
printf ("Please enter the student number to delete:");
Fflush (stdin);//emptying the keyboard buffer
scanf ("%d", &sno);
Head = Del_item_ryb (Head,sno, &del_message); Delete
if (del_message = = 1)
{
printf ("Delete successful!!! \ n ");
}
Else
{
printf ("Delete failed!!! \ n ");
}
System ("pause");
}
else if (value = = 4)//Sort
{r:
printf ("Please enter the sorting method (1 Ascending, 2 descending):");
Fflush (stdin);
scanf ("%d", &PXFS);
printf ("Please enter the sort type (1 by school number, 2 by score):");
Fflush (stdin);
scanf ("%d", &PXLX);
if (Pxfs >2 | | pxfs <0 | | pxlx > 2 | | pxlx <0)
{
printf ("Sort or sort type input does not conform to the specified!!! Please re-enter!!! \ n ");
System ("pause");

Student Information System