C语言课设学生信息管理系统

1、流程图 :开始显示菜单输入 ch 的值ch=?1.2.3.4.5.6.7.8.9.非调调调调调调调调调法0用用用用用用用用用选项creat()dele()add()sort()save()load()display()函函modify()search()函函函函数函数数函函数数数数数数结束全局变量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

2、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<stdio.h>#include<string.h>#include<stdlib.h

3、>#include<conio.h>struct 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);struct stud *dele(struct stud *head);struct stud *add(struct stud *head);struct stud *modify(struct st

4、ud *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 */printf( “nnttWelcometostudentinformationmanagementsystem”);printf( “nnt*”);printf( “nttt1:Enter the

5、information ”);printf( “nttt2:List the information ”);printf( “nttt3:Delete the information ”);printf( “nttt4:Add the information ”);printf( “nttt5:Modify the information”);printf( “nttt6:Search the information ”);printf( “nttt7:Sort the information ”);printf( “nttt8:Save the information ”);printf(

6、“nttt9:Load the information ”);printf( “nttt0:Exit“);printf( “ntttEnter your choice: ”);fflush(stdin);ch=getchar();getchar();switch(ch)case 1:head=creat();break;case 2:display(head);system(“pause”);break;case 3:head=dele(head);system(“pause”);break;case 4:head=add(head);system(“pause”);break;case 5:

7、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=load();break;case 0:return;break;default :clrscr();printf( “nt Error!Please check your inputnn ”);system(“pause”);struct

8、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( “tenter name:”);gets(p1->name); printf( “tenter number: ”);scanf(“%ld ”,&p1->num);printf( “tenter age:”);scanf(“%d ”,&p1->age);printf( “tenter sex:”);fflu

9、sh(stdin);scanf(“%c”,&p1->sex);printf( “tenter Math score: ”);scanf(“%d ”,&p1->score0);printf( “tenter English score:”);scanf(“%d ”,&p1->score1);printf( “tenter C score:”);scanf(“%d ”,&p1->score2);printf( “tenter telephone number:”);fflush(stdin); gets(p1->tele);head=p

10、1;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” );ch= y ;while(ch= y |ch= Y );return(head);struct stud *d

11、ele(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(“ nt1: According to namen“ );printf(“ nt2: According to numn” );printf(“ ntEnter your choice:” );scanf( “ %d” ,&choose);fflush(stdin);if(choose=1)printf(“

12、 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 !n

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

14、ad=p1->next;else p2->next=p1->next;printf(“ 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”);el

15、seprintf(“ nametnumbertagetsextMathtEnglishtCttelephonenumbern ” );doprintf( “%st%ldt%dt%ct%dt%dt%dt%sn ”,p->name,p->num,p->age,p->sex,p->score 0,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=(

16、struct stud *)malloc(sizeof(struct stud);clrscr();printf( “nttInput the information:”);printf( “nttname:”);fflush(stdin);gets(p0->name);printf(“ ttnumber:” );scanf( “ %ld” ,&p0->num);printf(“ ttage:” );scanf( “ %d” ,&p0->age);printf(“ ttsex:” );fflush(stdin);scanf( “ %c” ,&p0-&g

17、t;sex);printf(“ ttMath score:”);scanf( “ %d” ,&p0->score0);printf(“ ttEnglish score:”);scanf( “ %d” ,&p0->score1);printf(“ ttC score:” );scanf( “ %d” ,&p0->score2);printf(“ tttelephone number:” );fflush(stdin);gets(p0->tele);p1=head;if(head=NULL)head=p0;p0->next=NULL;elsew

18、hile(p0->num>p1->num)p2=p1,p1=p1->next;if(p0->num<=p1->num)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)/*链表的修改 */struct stud *p1,*p2,*p0;clrscr();printf(“ ntInput the student s name:

19、 ” );p0=(struct stud *)malloc(sizeof(struct stud);fflush(stdin);gets(p0->name);if(head=NULL)printf(“nNoinformation!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->name)=0)printf(“ nametnumbertagetsext

20、MathtEnglishtCttelephone 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( “tNewinformation:number: ”);scanf(“%ld ”,&p0->num);print

21、f( “tttage:”); scanf(“%d ”,&p0->age);printf( “tttsex:”);fflush(stdin); scanf(“%c ”,&p0->sex);printf( “tttMath score:”);scanf(“%d ”,&p1->score0); printf( “tttEnglishscore:”); scanf(“%d ”,&p1->score1);printf( “tttCscore:”);scanf(“%d ”,&p1->score2);printf( “ttttelepho

22、nenumber: ”); fflush(stdin); gets(p0->tele); p1=head; if(head=NULL)head=p0;p0->next=NULL;elsewhile(p0->num>p1->num)p2=p1;p1=p1->next;if(p0->num<=p1->num)if(head=p1)head=p0;else p2->next=p0;p0->next=p1;elsep1->next=p0;p0->next=NULL;printf(“ Modify Successed !nne

23、lse printf(“ Not been find!nn”);”);return(head);void search(struct stud *head)/*查询链表 */struct stud *p;int choose;long num;char name20;clrscr();printf(“ nttChoose the way you want” );printf(“ nt1: According to namen“ );printf(“ nt2: According to numn” );printf(“ nt Enter your choice:”);scanf( “ %d” ,

24、&choose);fflush(stdin);if(choose=1)printf(“ nt enter the name:” );gets(name);if(head=NULL)printf(“tnNo information !nn ”);elsep=head;while(strcmp(name,p->name)!=0&&p->next!=NULL)p=p->next;if(strcmp(name,p->name)=0)printf(“ nametnumbertagetsextMathtEnglishtCttelephone numbern”

25、 );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)printf(“ nt Enter the number:”);scanf( “ %ld” ,&num);if(head=NULL)printf(“ nNo information!n” );elsep=head;while(n

26、um!=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->score2,p->tele);else printf(“ t Not been find!n” );el

27、se 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(“ nt1: According to Math:n” );printf(“ nt2: According to Englishn” );printf(“ nt3: Accor

28、ding to Cn” );printf(“ ntEnter your choice:” );scanf(“ %d” ,&ch);first = head->next;head->next = NULL;while (first != NULL)for(t=first, q=head; (q!=NULL) && (q->scorech-1>t->scorech-1); p=q, q=q->next);first = first->next;if (q = head)head = t;elsep->next = t;t-&g

29、t;next = 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.nnexit(0);p=head;*/” ,filename);whi

30、le(p!=NULL) fprintf(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(“ nttSu

31、ccess !n” );fclose(fp);struct stud *load()/*链表的导入 */FILE *fp;char filename20;struct 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,” %