C++学生信息管理系统

本文实例为大家分享了C++学生信息管理系统源码，供大家参考，具体内容如下

1. tea_list.c

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include"teacher.h"
int sq_tea ;
PTEA head = NULL ;
FILE *fp ;
int tea_llopen(const char* path)//打开文件
{
 fp=fopen(path,"r");
 if(fp==NULL){
 perror("open fail");
 return -1;}
#ifdef DEBUG
 printf ("debug--001") ;
#endif
 PTEA p;
 int ret;
 while(p)
 {
 p=malloc(sizeof(TEA));
 if(p==NULL){
 perror("申请空间不够");
 return -1;}
 ret=fscanf(fp,"%d%d%d%s%s",
 &p->id,&p->age,&p->wages,p->name,p->passwd);
 if(ret<=0) break;
 if(head==NULL){
 p->next=NULL;
 p->pre=NULL;
 head=p;}
 else{
 p->next=head;
 p->pre=NULL;
 head->pre=p;
 head=p;}
 }
 return 0;
}
#if 1
int tea_llshow( )//显示
{
 if(head==NULL)
 return -1;
 PTEA p=head;
 printf("工号\t年龄\t工资\t姓名\n");
 while(p)
 {
 printf("%d\t%d\t%d\t%s\n",
 p->id,p->age,p->wages,p->name);
 p=p->next;
 }
 return 0;
}
 
PTEA tea_llcheck(PTEA a)//查找
{
 printf("输入查找教师工号\n");
 int id;
 scanf("%d",&id);
 while(getchar()!='\n');
 PTEA p;
 p=head;
 while(p)
 {
 if(p->id==id){
 printf ("工号\t年龄\t薪水\t姓名\n " );
 printf ("%d\t%d\t%d\t%s\n",p->id,p->age,p->wages,p->name);
 break ;
   }
 p=p->next;
 }
 if (p==NULL) {
 printf ("未找到该教师\n");
 printf ("是否继续查找y/n\n") ;
 char ch ;
 getchar();
 ch=getchar();
 if((ch=='y')||(ch=='Y')) 
 tea_llcheck (p ) ; 
 else
 return NULL ;
 } 
 
return 0;
 
}
#endif
#if 1
int tea_lladd(PTEA b )//增加老师信息
{
#ifdef _DEBUG_ 
 printf ("debug-001\n") ;
#endif
 PTEA p ;
 char ch ;
 p=malloc(sizeof(TEA));
 if(p==NULL){
 perror("申请空间不够\n");
 return -1;}
 printf ("请输入添加老师的信息\n工号\t年龄\t薪水\t姓名\t密码\n") ;
 scanf("%d%d%d%s",&p->id,&p->age,&p->wages,p->name,p->passwd) ;
 while(getchar()!='\n');
 if ( p == NULL )
 return -1 ;
 if ( head == NULL ) //说明链表为空，加入成第一个
 { p->next = NULL ;
 p->pre = NULL ;
 head->pre = p ;
 head = p ; 
 }
 else {
 p->next=head ;
 p->pre=NULL ;
 head->pre = p ;
 head=p ;
 }
/* fprintf ( fp , "%d\t%d\t%d\t%s\n",p->id,p->age,p->wages,p->name ) ;
 fclose ( fp ) ;
  fopen ("teacher.txt" , "a+");
*/ 
 
 
 return 0 ;
}
 
#endif 
#if 1
int tea_lldelete( PTEA a ) //删除老师
{ int key ;
 printf ("请输入要删除的老师的工号\n") ;
 scanf ("%d",&key);
 while(getchar()!='\n');
 PTEA p ;
 PTEA q ;
 p = head ;
 while (p)
 { if (p->id == key )
 {
 if( (p == head)&&(head->next!=NULL) )
 { head = head->next ;
 head->pre = NULL ; 
#ifdef _DEBUG_
 printf ("case 1\n") ;
#endif
 }
 else if ((p==head) && ( head->next==NULL))
 { head = NULL ;
#ifdef _DEBUG_
 printf ("case 2\n") ; 
#endif 
 } 
 else if( (p!=head )&&(p->next!=NULL) )
 {p->pre->next=p->next ;
 p->next->pre = p->pre ;
#ifdef _DEBUG_
 printf ("case 3\n ") ; I
#endif 
 }
 else { p->pre->next = NULL ;
#ifdef _DEBUG_ 
 printf ("case 4\n") ; 
#endif 
 }
  break ;
 } 
 p = p->next ;
 
 }
 free (p) ;
 if (p==NULL)
 printf ("未找到该教师") ;
/* fp = fopen("teacher.txt","r+");
 while(p){
 fprintf (fp ," %d\t%d\t%d\t%s\n" , p->id , p->age ,p->wages , p->name );
 p=p->next ;
 }
 fclose (fp) ;
 tea_llopen ;
*/ }
#endif 
#if 1 
int tea_llchange()//修改老师信息
{ 
 PTEA p;
 printf("\n输入工号");
 int key;
 scanf("%d",&key);
 while(getchar()!='\n');
 p=head;
 while(p)
 {
  if(p->id==key){
 printf("工号\t年龄\t薪水\t姓名\n");
 scanf("%d%d%d%s%s",
 &p->id,&p->age,&p->wages,p->name,p->passwd);
 while(getchar()!='\n');
 break ;
}
  p=p->next;}
 
  p = head ;
 printf ("修改之后为\n");
 printf("学号\t年龄\t数学\t英语\t语文\t班级\t姓名\t密码\n");
 while(p)
 {
 printf("%d\t%d\t%d\t%s\t%s\n",
 p->id,p->age,p->wages,p->name,p->passwd);
 p=p->next;
 }
 
 
 
 return 0;
}
 
 
#endif
 
#if 1
 
PTEA tea_check_id() //校验老师用户名
{
 PTEA p;
 p = head;
 int id;
 char ch;
 printf("请输入您的工号:");
 scanf("%d",&id);
 while(getchar()!='\n');
 while(p)
 {
 if(p->id==id){
 return p;
 
 }
 p = p->next;
 }
 if(p==NULL){
 printf("找不到该用户\n");
 printf("是否重试?[y/n]\n");
// scanf("%c",&ch) ;
 // getchar () ;
 ch = getchar () ;
 if ((ch=='y')||(ch=='Y'))
 tea_check_id();
 else
 menu();
}
}
#endif
#if 1
PTEA tea_check_passwd() //校验老师密码
{
 PTEA p;
 p =tea_check_id();
 char passwd[20];
 char ch;
 printf("请输入密码:");
 scanf("%s",passwd); 
 while(getchar()!='\n');
 if(strcmp (p->passwd , passwd)==0)
 { 
 sq_tea = p->id ;
#ifdef _DEBUG_
 printf("================%d\n",p->id) ;
 printf("================%d\n",sq_tea) ;
 getchar();
 getchar();
#endif
 return p;
 }else{
 printf("密码不正确\n");
 printf("是否重新输入[y/n]\n");
// getchar() ;
 ch = getchar () ;
 while(getchar()!='\n');
 if((ch=='y')||(ch=='Y'))
 tea_check_passwd();
 else
 menu();
 }
 return NULL;
}
#endif
#if 1
int tea_change_passwd()
{
 PTEA p;
 p=tea_check_passwd();
 char new_passwd[20];
 char new[20];
 char ch;
 printf("请输入新密码:");
 scanf("%s",new_passwd);
 while(getchar() != '\n');
 printf("请再次输入新密码:");
 scanf("%s",new);
 while(getchar() != '\n');
 if(strcmp(new_passwd,new)==0)
 {
 strcpy(p->passwd,new_passwd) ;
 printf("密码修改成功!\n");
 
 
 // tea_write() ;
 }
 else
 {
 printf("密码输入错误\n");
 printf("是否重试[y/n]\n");
// getchar();
 ch=getchar() ;
 while(getchar()!='\n');
 if((ch=='y')||(ch=='Y'))
 tea_change_passwd();
 else
 exit(1);
 }
 return 0;
}
#endif
 
#if 1
int tea_lookme()
{
 PTEA p;
 p = head ;
 while (p) { 
 if( p->id == sq_tea ) {
 printf("工号\t年龄\t薪水\t姓名\t密码\n");
 printf("%d\t%d\t%d\t%s\n%s\n",
 p->id,p->age,p->wages,p->name,p->passwd);
 }
 p = p->next ;
} 
 return 0 ;
}
#endif
 
 
#if 1
 
int tea_write()
{
 PTEA p;
 // PTEA head ;
 FILE *fp;
 p=head;
 fp=fopen("teacher.txt","w+");
 while(p)
 { 
 fprintf( fp, 
  "%d\t%d\t%d\t%s\t%s\n",
  p->id,p->age,p->wages,p->name,p->passwd);
  p=p->next;
     } 
  return 0;
}
 
 
#endif
 
 
#if 0
int main(int argc,char * argv[])
{
 if(argc<2){
 printf("execult error");
 return -1;}
 int ret;
 PTEA p;
 ret=tea_llopen(argv[1]);
 if(ret<0){
 printf("list is end\n");
 return -1;}
// tea_llshow(head);
// int id;
/* p=tea_llcheck();
 printf("%d\t%d\t%d\t%s\n",
 p->id,p->age,p->wages,p->name);
*/ //tea_llshow();
// tea_lladd(head) ;
// tea_llshow(head) ;
// tea_lldelete( head ) ; 
 // tea_llshow(head) ;
 tea_llcheck(head) ;
 return 0;
 }
#endif

2. stu_list.c

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include"student.h"
PSTU head1 = NULL ;
int sq_stu ;
#if 1
 FILE*fp;
int stu_llopen(char* path)//打开文件
{
 fp=fopen(path,"r");
 if(fp==NULL){
 perror("open fail");
 return -1;}
#ifdef _DEBUG_
 printf ("open susess\n") ;
#endif
 PSTU p;
 int ret;
 while(p)
 { 
#ifdef _DEBUG_
 perror("while -time\n");
#endif
 p=malloc(sizeof(STU));
 if(p==NULL){
 printf("申请空间不够");
 return -1;}
 ret=fscanf(fp,"%d%d%d%d%d%d%s%s",
 &p->id,&p->age,&p->math,&p->english,
 &p->chinese,&p->class,p->name,p->passwd);
#ifdef _DEBUG_
 printf("ret is ok\n") ;
#endif
 if(ret<=0) {
#ifdef _DEBUG_
 printf ("list is end \n ") ;
#endif
 break;
 }
 if(head1==NULL){
 p->next=NULL;
 p->pre=NULL;
 head1=p;}
 else{
 p->next=head1;
 p->pre=NULL;
 head1->pre=p;
 head1=p;} 
 }
 return 0;
}
#endif
int stu_llshow()//显示
{
// FILE *fp;
 if(head1==NULL)
 return -1;
 PSTU p=head1;
 printf("学号\t年龄\t数学\t英语\t语文\t班级\t姓名\n");
 while(p)
 {
 printf("%d\t%d\t%d\t%d\t%d\t%d\t%s\n",
 p->id,p->age,p->math,p->english,p->chinese,
 p->class,p->name);
 p=p->next;
 }
// fflush(stdout) ;
 return 0;
}
 
int stu_llcheck()//查找
{
 printf("\n输入查找学号\n");
 int key;
 scanf("%d",&key);
 while(getchar()!='\n');
 PSTU p;
 p=head1;
 if(head1==NULL) 
 {
 printf ("打开链表失败") ;
 return -1;
 }
 while(p)
 {
 if(p->id==key) {
#ifdef _DEBUG_
 printf ("while p ") ; 
#endif
 printf("%d\t%d\t%d\t%d\t%d\t%d\t%s\n",
 p->id,p->age,p->math,p->english,p->chinese,
 p->class,p->name);
 break ;
} 
 p=p->next;
 }
 
 if (p==NULL) {
 printf ("未找到该学生");
 printf ("是否继续查找y/n") ;
 char ch ;
 ch=getchar();
 while(getchar()!='\n');
 if((ch='y')||(ch=='Y')) 
 stu_llcheck() ;
 else exit(1) ;
 
 }
 
return 0;
}
int __stu_lladd(PSTU p)//被调用添加
{
 if(p==NULL) return -1;
 if(head1==NULL){
 p->next=NULL;
 p->pre=NULL;
 head1->pre=p;
 head1=p;}
 else{
 p->next=head1;
 p->pre=NULL;
 head1->pre=p;
 head1=p;}
 return 0;
}
int stu_lladd()//添加
{
 PSTU p;
 p=malloc(sizeof(STU));
 if(p==NULL) return -1;
 printf("\n输入添加学生信息\n\n");
 printf("学号\t年龄\t数学\t英语\t语文\t班级\t姓名\t密码\n");
 scanf("%d%d%d%d%d%d%s",
 &p->id,&p->age,&p->math,&p->english,
 &p->chinese,&p->class,p->name,p->passwd);
 __stu_lladd(p);
/* fprintf( fp ,
 "%d\t%d\t%d\t%d\t%d\t%d\t%s\n",
 p->id,p->age,p->math,p->english,p->chinese,p->class,p->name );
 fclose (fp) ;
 fp = fopen ("student.txt","r" ) ;
*/
 return 0;
}
#if 1
int __stu_lldelete(int id)//被调用的删除
{
 PSTU p;
 PSTU q=NULL;
 p=head1;
 while(p)
 {
 if(p->id==id){
 if(p==head1){
 if(head1->next){
  head1=head1->next;
  head1->pre=NULL;}
 else{
  head1=NULL;}
  }
 else{
  if(p->next){
  p->pre->next=p->next;
  p->next->pre=p->pre;}
  else{
  p->pre->next=NULL;}
 }
 
 break;
 }
 p=p->next;
 } 
 if (p==NULL) {
  printf ("未找到该学生\n");
 
 }
 free(p);
/* fclose (fp) ;
 p=head1 ;
 fp = fopen("student.txt","w+");
 while(p){
 fprintf (fp ,
 "%d\t%d\t%d\t%d\t%d\t%d\t%s\n", 
 p->id,p->age,p->math,p->english,p->chinese,p->class, p->name); 
 p=p->next ;
   } 
   fclose (fp) ;
  fp = fopen ("student.txt","r" ) ;
   p=head1 ;
  stu_llopen("") ;
*/}
int stu_lldelete()//删除
{
 int id;
 PSTU p;
 printf("\n输入删除学号\n");
 scanf("%d",&id);
 while(getchar()!='\n') ;
 return __stu_lldelete(id);
}
#endif
#if 1
int stu_llchange()//修改
{ 
 PSTU p;
 printf("\n输入修改学号");
 int key;
 scanf("%d",&key);
 while(getchar() != '\n');
 p=head1;
 while(p)
 {
  if(p->id==key){
 printf("学号\t年龄\t数学\t英语\t语文\t班级\t姓名\t密码\n");
 scanf("%d%d%d%d%d%d%s%s",
 &p->id,&p->age,&p->math,&p->english,
 &p->chinese,&p->class,p->name,p->passwd);
 
 break ;
}
  p=p->next;}
 
/* fprintf( fp ,
 "%d\t%d\t%d\t%d\t%d\t%s\t%d\n",
 p->id,p->age,p->math,p->english,p->chinese,p->name,p->class );
 printf("学号\t年龄\t数学\t英语\t语文\t姓名\t班级");
*/ p = head1 ;
 printf ("修改之后为\n");
 printf("学号\t年龄\t数学\t英语\t语文\t班级\t姓名\n");
 while(p)
 {
 printf("%d\t%d\t%d\t%d\t%d\t%d\t%s\n",
 p->id,p->age,p->math,p->english,p->chinese,
 p->class,p->name);
 p=p->next;
 }
 
 
 
 return 0;
}
#endif
#if 1 //排序
int stu_sort()
{
 PSTU p ;
// p->sum == (p->math + p->english + p->chinese) ;
PSTU new_head1=NULL;
PSTU q=NULL,max=head1,prev;
 printf ("按照总成绩排序\n");
while(head1)
{
 //1,找到最大分数的节点地址
 max = head1;
 prev=q=NULL;
 p=head1;
 while(p)
 {
 if( (p->math+p->english+p->chinese) > (max->math+max->english+max->chinese) )
 {
 max = p;
 prev= q;
 }
 q = p;
 p=p->next;
 }
 if(prev){
 prev->next = max->next;
 }else{
 head1= head1->next;
 }
 
 //3,把该节点头插到新链表头指针
 max->next = new_head1;
 new_head1 = max;
}
head1 = max;
stu_llshow() ;
 return 0 ;
}
#endif
 
#if 1
PSTU stu_check_id() //校验学生用户名
{
 PSTU p;
 p = head1;
 int id;
 char ch;
 printf("请输入您的学号:");
 scanf("%d",&id);
 while(getchar() != '\n');
 while(p)
 {
 if(p->id==id){
 return p;
 }
 p = p->next;
 }
 printf ("找到该用户\n") ;
 if(p==NULL){
 printf("找不到该用户\n");
 printf("是否重试?[y/n]\n");
 ch = getchar () ;
 while(getchar()!='\0');
 if ((ch=='y')||(ch=='Y'))
 stu_check_id();
 else
 menu();
}
}
#endif
#if 1
PSTU stu_check_passwd() //校验学生密码
{
 PSTU p;
 p =stu_check_id();
 char passwd[20];
 char ch;
 printf("请输入密码:");
 scanf("%s",passwd);
 while(getchar()!='\n') ;
 if(strcmp (p->passwd , passwd)==0)
 {
 sq_stu = p->id ;
 return p;
 }else{
 printf("密码不正确\n");
 printf("是否重新输入[y/n]\n");
 ch = getchar () ;
 while(getchar()!='\n');
 if((ch=='y')||(ch=='Y'))
 stu_check_passwd();
 else
 menu();
 }
 return NULL;
}
#endif
#if 1
int stu_change_passwd()
{
 PSTU p;
 p=stu_check_passwd();
// p->passwd=1234;
 char new_passwd[20];
 char new[20];
 char ch;
 printf("请输入新密码:");
 scanf("%s",new_passwd);
 while(getchar() != '\n');
 printf("请再次输入新密码:");
 scanf("%s",new);
 while(getchar()!='\n') ;
 if(strcmp(new_passwd,new)==0)
 {
 strcpy(p->passwd,new_passwd) ;
 printf("密码修改成功!\n");
 }
 else
 {
 printf("密码输入错误\n");
 printf("是否重试[y/n]\n");
 ch=getchar();
 while (getchar()!='\n') ;
 if((ch=='y')||(ch=='Y'))
 stu_change_passwd();
 else
 student_menu();
 }
 return 0;
}
#endif
 
#if 1
int stu_lookme()
{
 PSTU p;
 p = head1 ;
#ifdef _DEBUG_
 printf ("%d\n",sq_stu) ;
#endif
 while (p) {
 if (p->id==sq_stu){ 
 printf("学号\t年龄\t数学\t英语\t语文\t班级\t姓名\t密码\n");
 printf("%d\t%d\t%d\t%d\t%d\t%d\t%s\t%s\n",
 p->id,p->age,p->math,p->english,p->chinese, p->class,p->name,p->passwd);
 }  p = p->next ;
  
 } 
 return 0 ; 
}
 
#endif
#if 1
 
int stu_write()
{
 PSTU p;
 FILE *fp;
// PSTU head1 ;
 p=head1;
 fp=fopen("student.txt","w");
 while(p)
 {
 fprintf( fp,
 "%d\t%d\t%d\t%d\t%d\t%d\t%s\t%s\n",
 p->id,p->age,p->math,p->english,p->chinese,p->class,p->name,p->passwd);
  p=p->next;
 }
 return 0;
}
#endif
#if 1 
void stu_check_class() 
{
int class ;
PSTU p ;
int i=0 ;
p = head1 ;
printf ("请输入您要查找的班级:\n");
scanf ("%d",&class);
 while(getchar()!='\n') ;
while (p){ 
 if (p->class==class ) {
 printf("%d\t%d\t%d\t%d\t%d\t%d\t%s\n",
 p->id,p->age,p->math,p->english,p->chinese,
 p->class,p->name); 
  i++ ; }
  p=p->next; 
 
}
 if((p==NULL)&&(i==0))
 printf("未找到该班级\n");
 
}
 
#endif
 
#if 0
int main(int argc,char * argv[])
{
 /* if(argc<2){
 printf("execult error");
 return -1;}
*/ int ret;
 PSTU p;
 ret=stu_llopen("student.txt");
 if(ret<0){
 printf("创建失败\n");
 return -1;}
 
 printf ("debug-000\n") ;
 
// int id;
 stu_llshow();
// stu_lldelete();
// stu_llcheck() ;
// stu_llshow();
 stu_check_class() ; 
// stu_llchange();
// sleep (1) ;
// stu_llshow();
// stu_sort();
// stu_llshow();
return 0;
}
#endif

3. student.txt   
1002    25  100 90  85  1   s1  000
1003    25  107 90  84  1   s1  000
1004    25  100 90  80  1   s1  000
1005    25  107 90  80  1   s1  000
1006    25  100 90  80  1   s1  000
1007    25  108 90  80  1   s1  000
1008    25  100 78  80  1   s1  000
1009    25  100 90  80  1   s1  000
1010    25  100 45  80  1   s1  000
1012    25  90  90  80  1   s1  000

4. teacher.txt
10002   75  4500    wang2   000
10003   75  4500    wang3   000
10004   75  4500    wang4   000
10005   75  4500    wang5   000
10006   75  4500    wang6   000
10007   75  4500    wang7   000
10008   75  4500    wang8   000
10009   75  4500    wang9   000
10010   75  4500    wang10  000
10011   75  4500    wang11  000
10012   75  4500    wang12  000
10013   75  4500    wang13  000
10014   75  4500    wang14  000
10015   75  4500    wang15  000
10016   75  4500    wang16  000
10017   75  4500    wang17  000
10018   75  4500    wang18  000

5. menu.c

#include"student.h"
#include"teacher.h"
#if 1
void admin_menu_1()
{
 char u[20]="";
 char u1[20]="admin";
 char p[20]="";
 char p1[20]="admin";
 while (1)
 {
 printf("管理员用户名\n");
 scanf("%s",u);
 while(getchar()!= '\n');
 printf("管理员密码\n");
 scanf("%s",p);
 while(getchar()!= '\n');
 if (strcmp(u,u1)==0&&strcmp(p,p1)==0)
  admin_menu_2() ;
 else
 printf ("输入用户名或密码不正确，是否重试y/n\n");
 char ch ;
 ch=getchar() ;
 while(getchar()!= '\n');
 if ((ch=='y')||(ch=='Y'))
 admin_menu_1() ;
 else
  menu() ;
 
 }
}
#endif
#if 1
void admin_menu_2() {
 while(1)
 { system ("clear");
 printf("\n\n\n"); 
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t* 1.管理老师 *\n");
 printf("\t\t\t\t* 2.管理学生 *\n");
 printf("\t\t\t\t* 0.返回 *\n");
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t请输入数字选择\n");
 char ch ; 
 ch=getchar();
 while(getchar()!= '\n');
 switch(ch)
 {
 case '1':
  admin_menu_2_1() ;
  break ;
 case '2':
  admin_menu_2_2() ;
  break ;
 case '0':
  menu();
 default:
  admin_menu_2() ;
  break;
 }
 }
 
 }
 
#endif 
#if 1
void teacher_menu() 
{
 tea_check_passwd();
 
 
 char ch;
 while(1)
 { 
 printf("\n\n\n"); 
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t* 1.查找学生信息 *\n");
 printf("\t\t\t\t* 2.按总成绩排名 *\n");
 printf("\t\t\t\t* 3.修改老师密码 *\n");
 printf("\t\t\t\t* 4.查看我的信息 *\n");
 printf("\t\t\t\t* 5.按照班级查找学生 *\n");
 printf("\t\t\t\t* 0.返回  *\n");
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t请输入数字选择\n"); 
 ch=getchar();
 while(getchar()!='\n');
 switch(ch)
 {
 case '1':
 //admin_tea_delete();break;
  stu_llshow();
  stu_llcheck();
  break;
 case '2':
  stu_sort() ;
  break ;
 case '3':
  printf ("修改老师密码\n") ;
  tea_change_passwd() ;
  break ;
 case '4':
  printf("我的信息\n");
  tea_lookme() ;
  break;
 case '5':
  printf("按照班级查找\n");
   stu_check_class();
  break ;
 case '0':
   menu();
 default :
  printf("字符不符\n");
  break;
 }
 }
  } 
#endif 
#if 1 
void student_menu()
{
 stu_check_passwd();
 while(1)
 { 
 printf("\n\n\n"); 
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t* 1.查询我的信息 *\n");
 printf("\t\t\t\t* 2.修改学生密码 *\n");
 printf("\t\t\t\t* 0.返回  *\n");
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t请输入数字选择\n"); 
  char ch; 
 ch=getchar();
 while(getchar()!='\n');
 switch(ch)
 {
 case '1':
 printf("查询我的信息\n");
   stu_lookme();
 break;
 case '2':
 printf("修改密码\n");
  stu_change_passwd();
 break;
 case '0':
 menu() ;// break;//exit(0);
 default :
 printf("请输入\n");
 break;
 }
 }
 
 
}
#endif
 
#if 1
void menu()
{
 char ch;
 while(1)
 { system ("clear"); 
 printf("\n\n\n"); 
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t* 欢迎进入学生管理系统 *\n");
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t* 1.管理员登录 *\n");
 printf("\t\t\t\t* 2.老师登录 *\n");
 printf("\t\t\t\t* 3.学生登录 *\n");
 printf("\t\t\t\t* 0.保存并退出 *\n");
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t请输入数字选择\n"); 
  
 ch=getchar(); 
 while(getchar()!= '\n');
 switch(ch)
 {
 case '1':
 admin_menu_1();break;
 case '2':
 teacher_menu(); break;
 case '3':
  student_menu();break;
 case '0': 
  tea_write() ;
 stu_write() ;
 exit(0) ; //break;//exit(0);
 default :
 printf("输入不存在的字符\n");
 break;
 }
 }
}
#endif 
#if 1
void admin_menu_2_1() {
 
while(1) 
 { 
 printf("\n\n\n"); 
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t* 1.删除老师 *\n");
 printf("\t\t\t\t* 2.添加老师 *\n");
 printf("\t\t\t\t* 3.查找老师 *\n");
 printf("\t\t\t\t* 4.修改老师 *\n");
 printf("\t\t\t\t* 5.查看全部老师 *\n");
 printf("\t\t\t\t* 0.返回 *\n");
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t请输入数字选择\n"); 
 char ch ;
 ch=getchar();
  while(getchar()!='\n');
 switch(ch)
 {
  case '1':
  //admin_tea_delete();break;
  printf("删除教师\n");
  tea_llshow( ) ;
  tea_lldelete() ;
  break;
  case '2':
  printf("添加教师\n");
  tea_lladd( ) ;
  tea_llshow() ;
  break;
  //admin_tea_add();break;
  case '3':
  printf("查找教师\n");
  tea_llcheck( ) ;
  break;
  //admin_tea_cheak();break;
  case '4':
  printf("修改老师\n");
   tea_llchange() ;
   break;
  case '5':
  printf("查看全部老师\n");
   tea_llshow() ;
   break;
  // 
  case '0':
  admin_menu_2() ;// break;//exit(0);
  default :
  printf("字符不符\n");
  break;
 }
 }
 
 
}
#endif
#if 1
void admin_menu_2_2() {
 while(1)
 { 
 printf("\n\n\n"); 
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t* 1.删除学生 *\n");
 printf("\t\t\t\t* 2.添加学生 *\n");
 printf("\t\t\t\t* 3.查找学生 *\n");
 printf("\t\t\t\t* 4.修改学生 *\n");
 printf("\t\t\t\t* 5.查看全部学生 *\n");
 printf("\t\t\t\t* 0.返回 *\n");
 printf("\t\t\t\t******************************\n");
 printf("\t\t\t\t请输入数字选择\n"); 
  char ch ; 
 ch=getchar();
 while(getchar()!='\n'); 
 switch(ch)
 {
  case '1':
  printf ("删除学生"); 
  stu_llshow();
  stu_lldelete(); 
  stu_llshow();
  break ;
  case '2':
  printf("添加学生\n");
  stu_lladd(); 
  stu_llshow();
  break ;
  case '3':
  printf("查找学生\n");
  stu_llcheck();
  break;
  case '4':
  printf("修改学生\n");
  stu_llchange();
  break;
  case '5':
  printf("查看全部学生\n");
   stu_llshow() ;
   break;
  case '0':
  admin_menu_2() ;
  default :
  printf("请选择\n");
  break;
 }
 }
}
#endif
#if 1
int main()
{ 
 stu_llopen(FILENAME1);
 tea_llopen(FILENAME);
#ifdef _DEBUG_
 stu_llshow();
 tea_llshow();
#endif
 sleep(1);
 system ("clear");
 menu();
 
}
#endif

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