C++学生信息管理系统

#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 1int 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 1int 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 1int 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 1PTEA 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 1int 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 1int 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 0int 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

#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;}#endifint 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 1int __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 1int 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 1PSTU 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 1PSTU 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 1int 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 1int 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 0int 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

#include"student.h"#include"teacher.h"#if 1void 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 1void 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 1void 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 1void 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 1void 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 1void 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 1int main(){     stu_llopen(FILENAME1);    tea_llopen(FILENAME);#ifdef _DEBUG_    stu_llshow();    tea_llshow();#endif    sleep(1);    system ("clear");  menu(); }#endif