C语言课设学生信息管理系统.docx

1、C语言课设学生信息管理系统全局变量struct studchar name20;long num;int age;char sex;int score3;char tele12;struct stud *next;子程序1.creat()函数功能：创建链表，提示输入学生信息，储存到链表中，录入完成后输入y继续，输入n停止，返回主菜单2.display()函数功能：显示当前已经存入链表的信息3.dele()函数功能：删除链表中学生信息，可按姓名或学号删除4.add()函数功能：按学号插入学生信息5.modify()函数功能：修改链表中学生信息6.search()函数功能：查找学生信息，可按学号或

2、姓名查找7.sort()函数功能：对信息进行排序，可实现分别对三门成绩排序8.save()函数功能：将链表中的数据保存到指定文件9.load()函数功能：将指定文件中已有的数据读入链表源程序#include#include#include#includestruct studchar name20;long num;int age;char sex;int score3;char tele12;struct stud *next;main()struct stud *head;struct stud *creat(void);void display(struct stud *head);st

3、ruct stud *dele(struct stud *head);struct stud *add(struct stud *head);struct stud *modify(struct stud *head);void search(struct stud *head);void save(struct stud *head);struct stud *sort(struct stud *head);void save(struct stud *head);struct stud *load();char ch;head=NULL;for(;) clrscr(); /*清屏函数*/p

4、rintf(“nnttWelcome to student informationmanagement system”); printf(“nnt*”); printf(“nttt 1: Enter the information”); printf(“nttt 2: List the information”); printf(“nttt 3: Delete the information”); printf(“nttt 4: Add the information”); printf(“nttt 5: Modify the information”); printf(“nttt 6: Se

5、arch the information”);printf(“nttt 7: Sort the information”); printf(“nttt 8: Save the information”); printf(“nttt 9: Load the information”); printf(“nttt 0: Exit “); printf(“nttt Enter your choice:”); fflush(stdin); ch=getchar();getchar();switch(ch) case 1: head=creat();break;case 2:display(head);

6、system(“pause”); break;case 3:head=dele(head);system(“pause”);break;case 4:head=add(head);system(“pause”);break;case 5:head=modify(head);system(“pause”);break;case 6:search(head);system(“pause”);break;case 7:head=sort(head);system(“pause”);break;case 8:save(head);system(“pause”);break;case 9:head=lo

7、ad();break;case 0:return;break;default : clrscr();printf(“nt Error!Please check your inputnn”);system(“pause”); struct stud *creat(void) /*链表的创建*/struct stud *head,*p1;char ch;clrscr();head=NULL;p1=(struct stud *)malloc(sizeof(struct stud);printf(“t enter name:”); gets(p1-name); printf(“t enter numb

8、er:”); scanf(“%ld”,&p1-num); printf(“t enter age:”); scanf(“%d”,&p1-age); printf(“t enter sex:”); fflush(stdin); scanf(“%c”,&p1-sex); printf(“t enter Math score:”); scanf(“%d”,&p1-score0); printf(“t enter English score:”); scanf(“%d”,&p1-score1); printf(“t enter C score:”); scanf(“%d”,&p1-score2); p

9、rintf(“t enter telephone number:”); fflush(stdin); gets(p1-tele); head=p1;p1-next=NULL; do printf(“ntDO YOU WANT TO CONTINUE? Y or N?”); printf(“ntEnter your choise:”); fflush(stdin); ch=getchar(); clrscr(); if(ch=y|ch=Y) head=add(head); else if(ch!=N&ch!=n) printf(“ntError !Please check your input”

10、);ch=y;while(ch=y|ch=Y);return(head);struct stud *dele(struct stud *head)/*链表的删除*/struct stud *p1,*p2;int choose;long delnum;char name20;clrscr();printf(“nttChoose the way you want”);printf(“nt 1: According to namen “);printf(“nt 2: According to numn”);printf(“nt Enter your choice:”);scanf(“%d”,&cho

11、ose);fflush(stdin);if(choose=1)printf(“nt Enter the name:”);gets(name); if(head=NULL)printf(“tnNo information !n”);return(head); p1=head; while(strcmp(name,p1-name)!=0&p1-next!=NULL)p2=p1;p1=p1-next;if(strcmp(name,p1-name)=0)if(p1=head)head=p1-next;else p2-next=p1-next;printf(“t Delete Successed !nn

12、”);else printf(“t Not been find!nn”);return(head);else if(choose=2)printf(“ntEnter the number:”);scanf(“%ld”,&delnum);if(head=NULL)printf(“nNo information !n”);return(head); p1=head; while(delnum!=p1-num&p1-next!=NULL)p2=p1;p1=p1-next;if(delnum=p1-num)if(p1=head)head=p1-next;else p2-next=p1-next;pri

13、ntf(“t Delete Successed !nn”);else printf(“t Not been find!n”);return(head);else printf(“nt Error!Please check your inputnn”);return(head);void display(struct stud *head)struct stud *p;p=head;clrscr();if(head=NULL)printf(“nt No informationnn”);else printf(“nametnumbertagetsextMathtEnglishtCttelephon

14、e numbern”);doprintf(“%st%ldt%dt%ct%dt%dt%dt%sn”,p-name,p-num,p-age,p-sex,p-score0,p-score1,p-score2,p-tele);p=p-next;while(p!=NULL); struct stud *add(struct stud *head)/*链表的插入*/struct stud *p1,*p2,*p0;p0=(struct stud *)malloc(sizeof(struct stud);clrscr();printf(“ntt Input the information:”);printf(

15、“ntt name:”);fflush(stdin);gets(p0-name);printf(“tt number:”);scanf(“%ld”,&p0-num);printf(“tt age:”);scanf(“%d”,&p0-age);printf(“tt sex:”);fflush(stdin);scanf(“%c”,&p0-sex);printf(“tt Math score:”);scanf(“%d”,&p0-score0);printf(“tt English score:”);scanf(“%d”,&p0-score1);printf(“tt C score:”);scanf(

16、“%d”,&p0-score2);printf(“tt telephone number:”);fflush(stdin);gets(p0-tele); p1=head;if(head=NULL)head=p0;p0-next=NULL;elsewhile(p0-nump1-num)p2=p1,p1=p1-next;if(p0-numnum)if(head=p1)head=p0;else p2-next=p0;p0-next=p1;elsep1-next=p0;p0-next=NULL;return(head); struct stud *modify(struct stud *head)/*

17、链表的修改*/struct stud *p1,*p2,*p0;clrscr();printf(“ntInput the students name:”);p0=(struct stud *)malloc(sizeof(struct stud);fflush(stdin);gets(p0-name);if(head=NULL)printf(“nNo information !nn”);return(head); p1=head; while(strcmp(p0-name,p1-name)!=0&p1-next!=NULL)p2=p1;p1=p1-next;if(strcmp(p0-name,p1

18、-name)=0)printf(“nametnumbertagetsextMathtEnglishtCttelephone numbern”);printf(“%st%ldt%dt%ct%dt%dt%dt%sn”,p1-name,p1-num,p1-age,p1-sex,p1-score0,p1-score1,p1-score2,p1-tele);if(p1=head)head=p1-next; else p2-next=p1-next; printf(“tNew information: number:”); scanf(“%ld”,&p0-num); printf(“ttt age:”);

19、 scanf(“%d”,&p0-age); printf(“ttt sex:”); fflush(stdin); scanf(“%c”,&p0-sex); printf(“ttt Math score:”); scanf(“%d”,&p1-score0); printf(“ttt English score:”); scanf(“%d”,&p1-score1); printf(“ttt C score:”); scanf(“%d”,&p1-score2); printf(“ttt telephone number:”); fflush(stdin); gets(p0-tele); p1=hea

20、d; if(head=NULL)head=p0;p0-next=NULL;elsewhile(p0-nump1-num)p2=p1;p1=p1-next;if(p0-numnum)if(head=p1)head=p0;else p2-next=p0;p0-next=p1;elsep1-next=p0;p0-next=NULL;printf(“Modify Successed !nn”);else printf(“Not been find!nn”);return(head);void search(struct stud *head)/*查询链表 */struct stud *p;int ch

21、oose;long num;char name20;clrscr();printf(“nttChoose the way you want”);printf(“nt 1: According to namen “);printf(“nt 2: According to numn”);printf(“nt Enter your choice:”);scanf(“%d”,&choose);fflush(stdin);if(choose=1)printf(“nt enter the name:”);gets(name);if(head=NULL)printf(“tnNo information !n

22、n”);elsep=head;while(strcmp(name,p-name)!=0&p-next!=NULL)p=p-next;if(strcmp(name,p-name)=0)printf(“nametnumbertagetsextMathtEnglishtCttelephone numbern”);printf(“%st%ldt%dt%ct%dt%dt%dt%sn”,p-name,p-num,p-age,p-sex,p-score0,p-score1,p-score2,p-tele);else printf(“ Not been find!nn”);else if(choose=2)p

23、rintf(“nt Enter the number:”);scanf(“%ld”,&num);if(head=NULL)printf(“nNo information!n”);elsep=head;while(num!=p-num&p-next!=NULL)p=p-next;if(num=p-num)printf(“nametnumbertagetsextMathtEnglishtCttelephone numbern”);printf(“%st%ldt%dt%ct%dt%dt%dt%sn”,p-name,p-num,p-age,p-sex,p-score0,p-score1,p-score

24、2,p-tele);else printf(“t Not been find!n”);else printf(“nt Error!Please check your inputnn”);struct stud *sort(struct stud *head)struct stud *first;struct stud *t;struct stud *p; struct stud *q;int ch;clrscr();printf(“nttChoose the way you want”);printf(“nt 1: According to Math:n”);printf(“nt 2: Acc

25、ording to Englishn”);printf(“nt 3: According to Cn”);printf(“nt Enter your choice:”);scanf(“%d”,&ch);first = head-next;head-next = NULL;while (first != NULL) for (t=first, q=head; (q!=NULL) & (q-scorech-1t-scorech-1); p=q, q=q-next);first = first-next; if (q = head) head = t;elsep-next = t;t-next =

26、q; printf(“nttSuccess !n”);return head;void save(struct stud *head) /*保存链表*/FILE *fp;struct stud *p;char filename20;printf(“nninput the filename: “);fflush(stdin);gets(filename);if(fp=fopen(filename,”w”)=NULL)printf(“Save file %s error ! Type it again.nn”,filename);exit(0);p=head;while(p!=NULL) fpri

27、ntf(fp,”%st”,p-name);fprintf(fp,”%ldt”,p-num);fprintf(fp,”%dt”,p-age);fprintf(fp,”%ct”,p-sex);fprintf(fp,”%dt”,p-score0);fprintf(fp,”%dt”,p-score1);fprintf(fp,”%dt”,p-score2);fprintf(fp,”%stn”,p-tele);p=p-next;printf(“nttSuccess !n”);fclose(fp);struct stud *load() /*链表的导入*/FILE *fp;char filename20;s

28、truct stud *head,*p1,*p2;printf(“nninput the filename: “);fflush(stdin);gets(filename);if(fp=fopen(filename,”r”)=NULL)printf(“Load file %s error ! Type it again.nn”,filename);exit(0);if(!feof(fp)head=(struct stud *) malloc(sizeof(struct stud);fscanf(fp,”%st”,&head-name);fscanf(fp,”%ldt”,&head-num);fscanf(fp,”%dt”,&head-age);fscanf(fp,”%ct”,&head-sex);fscanf(fp,”