C语言课设学生信息管理系统

1、流程图:开始显示菜单1.creat()2.3.dele()函4.add()函5.6.modify(Searc结束7.sort() h(函8.save(函9.)load()函非法选项全局变量struct studchar name20;long num;int age;char sex;int score3;char tele12;struct stud *next;子程序() 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 止，返回主菜单() 函数 功能：显示当前已经存入链表的信息() 函数 功能：删除链表中学生信息，可按姓名或学号删除() 函数 功能：按学

2、号插入学生信息() 函数功能：修改链表中学生信息() 函数 功能：查找学生信息，可按学号或姓名查找() 函数 功能：对信息进行排序，可实现分别对三门成绩排序() 函数 功能：将链表中的数据保存到指定文件() 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)

3、; void display(struct stud *head); struct 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();

4、char ch; head=NULL;for(;) clrscr();/*清屏函数 */printf(“ nnttWelcometo studentinformationmanagementprintf(“nnt*匕*); printf(“ nttt 1: Enter the information” );printf(“nttt2:List the information”);printf(“nttt3:Delete the information”);printf(“nttt4:Add the information”);printf(“nttt5:Modify the informati

5、on”);printf(“nttt6:Search the information”);printf(“nttt7:Sort the information”);printf(“nttt8:Save the information”);printf(“nttt9:Load the information”);printf(“nttt0:Exit“ );printf(“ntttEnter your choice:”);fflush(stdin);system ” );ch=getchar();getchar();switch(ch)case 1 : head=creat(); break;cas

6、e 2 :display(head); 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

7、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 stud *creat(void) /* 链表的创建 */ struct stud *head,*p1;char ch; clrscr(); head=NULL; p1=(struct stud *)malloc(sizeof(str

8、uct stud); printf( “ t enter name: ”);gets(p1-name); printf(“ t enter number: ” );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 Englis

9、h score:” );scanf( “ %d” ,&p1-score1);printf( “ t enter C score:” );scanf( “ %d” ,&p1-score2);printf( “ 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(

10、); 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 *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( “

11、 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 ” );return(head); p1=head; while(strcmp(name,p1-name)!=0&p1-next!=NU

12、LL)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”);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(h

13、ead);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;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

14、*head)struct stud *p; p=head;clrscr();if(head=NULL)printf( “nt No informationnn” );else printf(“nametnumbertagetsextMathtEnglishtCttelephonenumbern ”);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

15、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( “ntt name: ” );fflush(stdin); gets(p0-name);printf( “tt number: ” );scanf( “ %ld”,&p0-num); printf( “ tt age:”);scanf( “ %d”,&p0-age); printf( “ tt sex

16、:”);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( “ %d”,&p0-score2); printf( “ tt telephone number:”);fflush(stdin);gets(p0-tele); p1=head;if(head=NULL) head=p0;p0-next=

17、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)/*链表的修改 */struct stud *p1,*p2,*p0;clrscr();printf( “ ntInput the students name: ”);p0=(struct stud *)malloc(sizeo

18、f(struct stud);fflush(stdin); gets(p0-name);p1=head;if(head=NULL)printf(“ nNo information !nn ”);return(head);while(strcmp(p0-name,p1-name)!=0&p1-next!=NULL)p2=p1;p1=p1-next; if(strcmp(p0-name,p1-name)=0)printf( “nametnumbertagetsextMathtEnglishtCttelephone numbern ”);printf( “ %st%ldt%dt%ct%dt%dt%d

19、t%sn ” ,p1-name,p1-num,p1-age,p1-sex, p1-score0,p1-score1,p1-score2,p1-tele);tNew information:number:”);scanf( “ %ld”,&p0-num); printf(scanf( “%d”,&p0-age);printf( “ tttscanf( “%c”,&p0-sex);printf( “ tttscanf( “%d”,&p1-score0);printf( “ tttscanf( “%d”,&p1-score1);printf( “ tttscanf( “%d”,&p1-score2)

20、;printf( “ tttif(p1=head)head=p1-next; else p2-next=p1-next; printf(fflush(stdin); gets(p0-tele); p1=head; if(head=NULL)tttage: ” );” sex: ” );Math English C telephonefflush(stdin);” score: ” )” score: ” )” score: ” )number: ” )head=p0;p0-next=NULL; elsewhile(p0-nump1-num) p2=p1;p1=p1-next; if(p0-nu

21、mnum) 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 choose;long num; char name20; clrscr();printf( “ nttChoose the way you wa

22、nt”);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 !nn”);elsep=head; while(strcmp(name,p-name)!=0&p-next!=NUL

23、L) 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)printf( “nt Enter the number:” );scanf( “ %ld”,&

24、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-score2,p-tele);else printf( “t Not been

25、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: According to Englishn ”);print

26、f( “ 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 = q;printf( “ nttSucces

27、s !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),filename);printf( “Save file %s error ! Type it again.nn exit(0); p=head;while(p!=NULL) fprintf(fp, fpr

28、intf(fp, fprintf(fp, fprintf(fp, fprintf(fp, fprintf(fp, fprintf(fp, fprintf(fp,”%st ”,p-name); %ldt ” ,p-num);%dt ”,p-age);%ct ”,p-sex);%dt ”,p-score0);%dt ”,p-score1);%dt ”,p-score2); %stn ”,p-tele);p=p-next;printf( “ nttSuccess !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),filename);printf( “Load file %s error ! Type it again.nn exit(0);if(!feof(fp)fscanf(fp, fscanf(fp, fscanf(fp, fscanf(fp,