C语言课设学生信息管理系统

1、流程图:非法选项1.调用2.调用3.调用4.调用5.调用6.调用7.调用8.调用9.调用creat()dele()add()save)load(结束全局变量structstud(charname20;longnum;intage;charsex;intscore3;chartele12;structstud*next;子程序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display()函数功能：显示当前已经存入链表的信息dele()函数功能：删除链表中学生信息，可按姓名或学号删除add()函数功能：按学号插入学生信息modify

2、()函数功能：修改链表中学生信息search()函数功能：查找学生信息，可按学号或姓名查找sort()函数功能：对信息进行排序，可实现分别对三门成绩排序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>#include<conio.h>structstud(charname20;longnum;intage;charsex;intscore3;chartele12;structst

3、ud*next;main()(structstud*head;structstud*creat(void);voiddisplay(structstud*head);structstud*dele(structstud*head);structstud*add(structstud*head);structstud*modify(structstud*head);voidsearch(structstud*head);voidsave(structstud*head);structstud*sort(structstud*head);voidsave(structstud*head);stru

4、ctstud*load();charch;head=NULL;for(;)(clrscr();/*清屏函数*/printf(printf(nnttWelcometostudentinformationmanagementsystem");nnt*");printf(nttt1:printf(“nttt2:Listtheinformation");printf(“nttt3:Deletetheinformationprintf(“nttt4:Addtheinformation")printf(“nttt5:Modifytheinformationprint

5、f(“nttt6:Searchtheinformationprintf(“nttt7:Sorttheinformation")printf(“nttt8:Savetheinformation"printf(“nttt9:Loadtheinformation”printf(“nttt0:Exit);Entertheinformation）；）；”)；”)；”)；”)；printf(ntttEnteryourchoice:”)；fflush(stdin)；ch=getchar()；getchar();switch(ch)case1':head=creat();break

6、;case2':display(head);system(pause");break；case3':head=dele(head);system(pause");break；case4':head=add(head);system(pause");break；case5':head=modify(head);system(pause");break;case6':search(head);system(pause");break;case7':head=sort(head);system(paus

7、e");break;case8':save(head);system(pause");break;case9':head=load();break;case0':return;break;default:clrscr();printf(ntError!Pleasecheckyourinputnn");system(pause");structstud*creat(void)/*链表的创建*/structstud*head,*p1;charch;clrscr();head=NULL;p1=(structstud*)malloc(si

8、zeof(structstud);printf(tentername:");gets(p1->name);printf(tenternumber:");scanf(%ld",&p1->num);printf(tenterage:");scanf(%d"，&p1->age);printf(tentersex:");fflush(stdin);scanf(%c",&p1->sex);printf(tenterMathscore:");scanf(%d",&

9、;p1->score0);printf(tenterEnglishscore:");scanf(%d",&p1->score1);printf(tenterCscore:");scanf(%d",&p1->score2);printf(tentertelephonenumber:");fflush(stdin);gets(p1->tele);head=p1;p1->next=NULL;do(printf(ntDOYOUWANTTOCONTINUE?YorN?”);printf(ntEnteryour

10、choise:");fflush(stdin);ch=getchar();clrscr();if(ch='y'|ch=Y)head=add(head);elseif(ch!='N'&&ch!='n')(printf(htError!Pleasecheckyourinput”);ch='y'while(ch=*'|ch=Y);return(head);structstud*dele(structstud*head)/*链表的删除*/(structstud*p1,*p2;intchoose;longd

11、elnum;charname20;clrscr();printf(nttChoosethewayyouwant”);printf(nt1:Accordingtonamen);printf(nt2:Accordingtonumn”)；printf(ntEnteryourchoice:”);scanf(%d”，&choose);fflush(stdin);if(choose=1)p1=head;(printf(ntEnterthename:”)；gets(name);if(head=NULL)(printf(tnNoinformation!n");return(head);whi

12、le(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;elsep2->next=p1->next;printf(tDeleteSuccessed!nn”);elseprintf(tNotbeenfind!nn”);return(head);elseif(choose=2)printf(htEnterthenumber:”)；scanf(%ld”，&del

13、num);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)head=p1->next;elsep2->next=p1->next;printf(tDeleteSuccessed!nn”);elseprintf(tNotbeenfind!n”);return(head);elseprintf

14、(ntError!Pleasecheckyourinputnn");return(head);voiddisplay(structstud*head)structstud*p;p=head;clrscr();if(head=NULL)printf(ntNoinformationnn”)；elseprintf(nametnumbertagetsextMathtEnglishtCttelephonenumbern”)；doprintf(%st%ldt%dt%ct%dt%dt%dt%sn",p->name,p->num,p->age,p->sex,p-&g

15、t;score0,p->score1,p->score2,p->tele);p=p->next;while(p!=NULL);structstud*add(structstud*head)/*链表的插入*/structstud*p1,*p2,*p0;p0=(structstud*)malloc(sizeof(structstud);clrscr();printf(nttInputtheinformation:”);printf(nttname:”);fflush(stdin);gets(p0->name);printf(ttnumber:”);scanf(%ld”

16、,&p0->num);printf(ttage:”)；scanf(%d”，&p0->age);printf(ttsex:”);fflush(stdin);scanf(%c，&p0->sex);printf(ttMathscore:");scanf(%d”,&p0->score0);printf(ttEnglishscore:');scanf(%d”,&p0->score1);printf(ttCscore:”);scanf(%d”,&p0->score2);printf(tttelephone

17、number:”);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;elsep2->next=p0;p0->next=p1;elsep1->next=p0;p0->next=NULL;return(head);structstud*modify(structs

18、tud*head)/*链表的修改*/structstud*p1,*p2,*p0;clrscr();printf(ntInputthestudentsname:”);p0=(structstud*)malloc(sizeof(structstud);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=p

19、1->next;if(strcmp(p0->name,p1->name)=0)printf(nametnumbertagetsextMathtEnglishtCttelephonenumbern”)；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;elsep2->next=p1->n

20、ext;printf(tNewinformation:number:");scanf(%ld",&p0->num);printf(tttage:");scanf(%d",&p0->age);printf(tttsex:");fflush(stdin);scanf(%c",&p0->sex);printf(tttMathscore:");scanf(%d",&p1->score0);printf(tttEnglishscore:");scanf(%d&

21、quot;,&p1->score1);printf(tttCscore:");scanf(%d",&p1->score2);printf(ttttelephonenumber:");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=p

22、0;elsep2->next=p0;p0->next=p1;elsep1->next=p0;p0->next=NULL;printf(ModifySuccessed!nn”);elseprintf(Notbeenfind!nn”);return(head);voidsearch(structstud*head)/*查询链表*/(structstud*p;intchoose;longnum;charname20;clrscr();printf(nttChoosethewayyouwant”);printf(nt1:Accordingtonamen);printf(nt2:

23、Accordingtonumn”)；printf(ntEnteryourchoice:”);scanf(%d”，&choose);fflush(stdin);if(choose=1)(printf(ntenterthename:”)；gets(name);if(head=NULL)(printf(tnNoinformation!nn");else(p=head;while(strcmp(name,p->name)!=0&&p->next!=NULL)(p=p->next;if(strcmp(name,p->name)=0)(printf

24、(nametnumbertagetsextMathtEnglishtCttelephonenumbern”)；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);elseprintf('Notbeenfind!nn”);elseif(choose=2)(printf(ntEnterthenumber:”);scanf(%ld”，&num);if(head=NULL)(pr

25、intf(hNoinformation!n”);else(p=head;while(num!=p->num&&p->next!=NULL)(p=p->next;if(num=p->num)(printf(nametnumbertagetsextMathtEnglishtCttelephonenumbern”)；printf(%st%ldt%dt%ct%dt%dt%dt%sn",p->name,p->num,p->age,p->sex,p->score0,p->score1,p->score2,p->

26、;tele);elseprintf(tNotbeenfind!n”);elseprintf(ntError!Pleasecheckyourinputnn”);structstud*sort(structstud*head)(structstud*first;structstud*t;structstud*p;structstud*q;intch;clrscr();printf(httChoosethewayyouwant”);printf(nt1:AccordingtoMath:n”);printf(nt2:AccordingtoEnglishn”);printf(nt3:Accordingt

27、oCn”);printf(ntEnteryourchoice:”);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->next=q;printf(nttSuccess!n”)；returnh

28、ead;voidsave(structstud*head)/*保存链表*/FILE*fp;structstud*p;charfilename20;printf(nninputthefilename:);fflush(stdin);gets(filename);if(fp=fopen(filename,”w”)=NULL)(printf(Savefile%serror!Typeitagain.nn”,filename);exit(0);p=head;while(p!=NULL)(fprintf(fp,”st”,p->name);fprintf(fp,”%ldt”,p->num);fp

29、rintf(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);structstud*load()/*链表的导入*/(FILE*fp;charfilename20;structstud*head,*p1,*p2;printf(nninputthefilename:);fflush(stdin);gets(filename);if(fp=fopen(filename,”r”)=NULL)(printf(Loadfile%serror!Typeitagain.nn”,filename);exit(0);if(!feof(fp)(head=(structstud*)malloc(sizeof(structstud);fscanf(fp,”st”,&a