How to use single linked list to realize Student Information Management system in C language

This article mainly introduces how the C language uses a single linked list to realize the student information management system, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let the editor take you to know it.

The running result is shown in the figure:

1. Running interface

two。 Enter student information

3. Sort by total score

The code is as follows:

# define ERROR 0#define OK 1#define OVERFLOW-1 LNode,*LinkList;// typedef int ElemType;typedef int Status;#include#include#include#include#includetypedef struct {char name [20]; char snumber [20]; char sex [10]; int math; int chinese; int english;} student;typedef struct LNode {student data; struct LNode * next;} LNode,*LinkList;// single linked list initialization Status InitList (LinkList & L) {L = new LNode; L-> next = NULL; return OK } / / create a single linked list void CreateList (LinkList & L next=NULL n) {LinkList r; LinkList p; L = new LNode; L-> next=NULL; r = L; int i; for (I = 0 data.math,&p- > data.sex,&p- > data.chinese,&p- > data.math,&p- > data.english); / / scanf ("% d%d%d", & p-> data.chinese,&p- > data.math,&p- > data.english); p-> next=NULL R-> next=p; r = p;}} / Total score Statistics int GradeSum (LinkList L) {int sum; sum = (L-> data.chinese) + (L-> data.english) + (L-> data.math); return sum;} / / Statistics of all student information void BianLi (LinkList L) {LinkList p; p = L-> next; printf ("name\ t student number\ t language\ t mathematics\ t English\ n") While (p) {printf ("% s\ t% s\ t% s\ t", p-> data.name,p- > data.snumber,p- > data.sex); printf ("% d\ t% d", p-> data.chinese,p- > data.math,p- > data.english,GradeSum (p)); p = p-> next; printf ("\ n");}} / / sort by total score void OrderSum (LinkList & L) {LinkList pfocus Qtail; tail = NULL While ((L-> next- > next)! = tail) {p = L; Q = L-> next; while (Q-> next! = tail) {if (GradeSum (Q))

Next) {p-> next = Q-> next; Q-> next = Q-> next- > next; p-> next- > next = Q; Q = p-> next;} Q = Q-> next; p = p-> next;} tail = Q;} printf ("sorting is complete! \ n ");} / / sort according to the language void OrderChinese (LinkList & L) {LinkList pdhoreqposttail; tail = NULL; while ((L-> next- > next)! = tail) {p = L; Q = L-> next; while (Q-> next! = tail) {if ((Q-> data.chinese))

Next- > data.chinese) {p-> next = Q-> next; Q-> next = Q-> next- > next; p-> next- > next = Q; Q = p-> next;} Q = Q-> next; p = p-> next;} tail = Q;} printf ("sort complete! \ n ");} / / sort by English void OrderEnglish (LinkList & L) {LinkList p next Q if; tail = NULL; while ((L-> next- > next)! = tail) {p = L; Q = L-> next; while (Q-> next! = tail) {if ((Q-> data.english)

Next- > data.english) {p-> next = Q-> next; Q-> next = Q-> next- > next; p-> next- > next = Q; Q = p-> next;} Q = Q-> next; p = p-> next;} tail = Q;} printf ("sort complete! \ n ");} / / sort according to mathematics void OrderMath (LinkList & L) {LinkList p next Q if; tail = NULL; while ((L-> next- > next)! = tail) {p = L; Q = L-> next; while (Q-> next! = tail) {if ((Q-> data.math))

Next- > data.math) {p-> next = Q-> next; Q-> next = Q-> next- > next; p-> next- > next = Q; Q = p-> next;} Q = Q-> next; p = p-> next;} tail = Q;} printf ("sort complete! \ n ");} / Delete the student information Status ListDelete (LinkList & L _ next; int I) {LinkList p; LinkList q; int j; p = L _ Tincj = 0; while ((p-> next) & & (jnext; + + j;} if (! (p-> next) | | (j > iMet 1) return ERROR; q = p-> next; p-> next = Q-> next; delete q; return OK;} void DeleteStudent (LinkList & L) {int i; printf (" Please enter the serial number of the student to be deleted\ n ") Scanf ("% d", & I); ListDelete (Lmemi); printf ("deleted! \ n ");} / / insert student information Status ListInsert (LinkList & L int igradchar name [], char snumber [], char sex [], int chinese,int math,int english) {LinkList p = L; LinkList s; int j = 0; while (p & (jnext; + + j;} if (! p | j > imur1) return ERROR; s = new LNode; strcpy (s-> data.name,name); strcpy (s-> data.snumber,snumber); strcpy (s-> data.sex,sex); s-> data.chinese = chinese S-> data.math = math; s-> data.english = english; s-> next = p-> next; p-> next = s; return OK;} void InsertStudent (LinkList & L) {int n; char name [20], snumber [20], sex [10]; int chinese,math,english; printf ("Please enter position N:"); scanf ("% d", & n) Printf ("Please enter the student's name, student number, gender, Chinese score, math score, English score and total score in turn\ n"); scanf ("% s%s%s%d%d%d", & name,&snumber,&sex,&chinese,&math,&english); ListInsert (LMagne namephatemsnumberchinese English);} void menu () {printf ("\ t\ t\ t = =\ n\ n") Printf ("\ t\ t\ t student information management system\ n\ n"); printf ("\ t\ t\ t =\ n\ n"); printf ("\ t\ t\ t = system function menu =\ n") Printf ("\ t\ t\ t"-"\ n") Printf ("\ t\ t\ t"); printf ("\ t\ t =\ n"); printf ("\ t\ t" 0. Enter student information. Statistics on students\ n "); printf ("\ t\ t\ t =\ n "); printf ("\ t\ t "2. Sorted according to the total score. Sorted by Chinese scores, printf ("\ t\ t = =\ n"); printf ("\ t\ t 4. Rank 5 according to math scores. Sorted by English scores\ n "); printf ("\ t\ t\ t =\ n "); printf ("\ t\ t 6. " Delete student information 7. Insert student information "\ n"); printf ("\ t\ t\ t =\ n"); printf ("\ t\ t" 8. Exit system\ n "); printf ("\ t\ t\ t = =\ n "); printf ("\ t\ t--\ n "); printf ("\ n\ n\ n ");} void luRu (LinkList & L) {int n Printf ("Please enter the number of students N:"); scanf ("% d", & n); printf ("Please enter the student's name, student number, gender, Chinese score, math score, English score, total score\ n"); CreateList (LMagne); printf ("Student information has been entered!" Void main (int args,char argv []) {LinkList p; InitList (p); int i; do {menu (); scanf ("% d", & I); getchar (); switch (I) {case 0:luRu (p); break; case 1:BianLi (p); break; case 2:OrderSum (p); BianLi (p); break; case 3:OrderChinese (p); BianLi (p); break; case 4:OrderMath (p); BianLi (p); break Case 5:OrderEnglish (p); BianLi (p); break; case 6: DeleteStudent (p); break; case 7:InsertStudent (p); break; case 8:exit (0);}} while (I! =-1) } Thank you for reading this article carefully. I hope the article "how to use single linked list to implement student information management system in C language" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!