C++实现学生选课系统_C/C++

本文实例为大家分享了C++实现学生选课系统的具体代码，供大家参考，具体内容如下
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									#include <iostream>

									#include <iomanip> 

									#include <fstream>

									#include<Windows.h>

									#include<cstring>

									using namespace std;

									struct SubList/*某个学生所学的课程中的某一个 */

									{

									 int num; /*课程代号 */

									 SubList *next;  /*指向下一个课程的指针*/

									 SubList() :num(-1), next(NULL){} /*构造函数*/

									};

									struct StuList /*课程中所选的学生*/

									{

									 int num;   /* 学生的学号*/

									 float score;   /*学生所得的该课程分数*/

									 StuList *next; /*下一个学生*/

									 StuList() :num(-1), score(0), next(NULL){}

									};

									class Student 

									{

									private:

									 int Num;  /*学号*/

									 char Name[20];    /*学生的姓名 */

									 int MaxSubNum;   /*学生最多可以学五门课程 */

									 int FactSubNum;   /* 学生实际所学的课程数目 */

									 SubList *Root;   /*课程的指针*/

									 float SumXueFen; /*总的选课学分*/

									 float FactXueFen; /*实际获得学分*/

									 float SumGrade; /*总成绩*/

									 bool Update; /*是否需要更新信息*/

									public:

									 Student *next;/*让所有学生的信息连接起来*/

									 SubList *GetSubPtr()const{ return Root; }/*获取所选的课程表*/

									 Student() :Update(false), Root(new SubList()), FactXueFen(0), MaxSubNum(5), FactSubNum(0), SumXueFen(0), SumGrade(0),next(NULL){}

									 void SetName(char N[]){ strcpy(Name, N); } /* 设置学生的姓名 */

									 void SetNum(int num){ Num = num; } /*设置学号*/

									 const char* GetName()const{ return Name; }/*得到学生的姓名 */

									 int GetNum()const{ return Num; } /*得到学号*/

									 int GetFactSubNum()const{ return FactSubNum; } /*得到实际选课数*/

									 bool FindSub(int num)const;  /*查找是否已有此课程,如果有返回,如果没有返回 */

									 void SetInfo(float sumXueFen, float factXueFen, float sumGrade)

									 {

									 SumXueFen = sumXueFen;/*这三条信息因为一起用 所以一起设置了*/

									 FactXueFen = factXueFen;

									 SumGrade = sumGrade;

									 }

									 void SetUpdate(bool t){ Update = t; }/*是否更新信息的标志*/

									 float GetAveGrade(){ return SumGrade / FactSubNum; }  /*学生课程的平均成绩*/

									 void AddSub(int num); /*增加课程*/

									 bool IsFull()const{ return MaxSubNum == FactSubNum; }

									 void ShowStuInfo(); /*输出学生信息*/

									 void DelSub(int num); /*删除课程 Manage类使用*/

									 ~Student()/*析构函数 不要也行影响不太大 一般程序，还不太会内存用完*/

									 {

									 SubList *p = Root;

									 while (p)

									 {

									  SubList*t = p->next;

									  delete p;

									  p = t;

									 }

									 }

									};

									//课程类 

									class Subject

									{

									private:

									 int MaxStuNum;  /*最多学生数*/

									 int FactStuNum;  /*实际学生数*/

									 float Credit;  /*该课程的学分 */

									 char Name[20]; /* 该课程的名称 */

									 int Num; /*课程的代号*/

									 StuList *Root; /* 学生名单 */

									 float AveGrade; /*该课程的平均成绩 */

									 bool Update; /*是否更新信息*/

									public:

									 StuList *GetStuPtr()const{ return Root; }/*获取选此课程的学生表*/

									 Subject*next;

									 Subject() :Root(new StuList()), MaxStuNum(30), FactStuNum(0), Update(false),next(NULL){}

									 float GetCredit()const{ return Credit; }  //得到课程的学分 

									 void SetCredit(float credit){ Credit = credit; } //设置学分

									 const char* GetName()const{ return Name; } //读出课程的名称

									 void SetName(char N[]){ strcpy(Name, N); } //设置课程的名称

									 int GetNum()const{ return Num; } //读出课程的代号

									 void SetNum(int num){ Num = num; } //设置课程的代号

									 int GetFactStuNum()const{ return FactStuNum; } //返回实际学生数 

									 int GetMaxStuNum()const{ return MaxStuNum; }//最大学生数

									 void SetUpdate(bool t){ Update = t; }

									 void SetAveGrade(float num){ AveGrade = num/FactStuNum; } //设置平均分

									 float GetAveGrade(){ return AveGrade; }  //得到学生的平均成绩

									 float GetStuScore(int num); //查找某个学生的成绩

									 bool IsFull()const{ return MaxStuNum == FactStuNum; }//是否人数已满

									 void DelStu(int num);//删除学生

									 void AddStu(int num);//增加学生

									 ~Subject()

									 {

									 StuList *p = Root;

									 while (p)

									 {

									  StuList*t = p->next;

									  delete p;

									  p = t;

									 }

									 }

									};

									float Subject::GetStuScore(int num)

									{

									 StuList*p = Root->next;

									 while (p->num != num)

									 p = p->next;

									 return p->score;

									}

									void Student::ShowStuInfo()

									{

									 cout << Num << " " << Name << " " << "选课数：" << FactSubNum << endl;

									 cout << "\t\t 总成绩" << SumGrade << " 平均分" << GetAveGrade() << endl;

									 cout << "\t\t课程总学分" << SumXueFen << " 获得学分" << FactXueFen << endl; 

									 system("pause");

									}

									bool Student::FindSub(int num)const//查找是否已有此课程,如果有返回,如果没有返回

									{

									 bool t = false;

									 SubList *p = Root->next;

									 while (!t && p)

									 {

									 if (p->num == num)

									  t = true;

									 p = p->next;

									 }

									 return t;

									}

									void Student::AddSub(int num)//给学生增加一门课 

									{

									 SubList *s = new SubList(), *p = Root;

									 while (p->next)

									 p = p->next;

									 p->next = s;

									 s->num = num;

									 FactSubNum++;

									 Update = true;

									}

									void Student::DelSub(int num)

									{

									 SubList*p = Root, *t;

									 while (p->next->num != num)

									 p = p->next;

									 t = p->next;

									 p->next = t->next;

									 FactSubNum--;

									 Update = true;

									 delete t;

									}

									//////////////////////////Subject//////////////////////////////////

									void Subject::AddStu(int num)// 

									{

									 StuList *s = new StuList(), *p = Root;

									 while (p->next)

									 p = p->next;

									 p->next = s;

									 s->num = num;

									 FactStuNum++;

									 Update = true;

									}

									void Subject::DelStu(int num)

									{

									 StuList*p = Root, *t;

									 while (p->next->num != num)

									 p = p->next;

									 t = p->next;

									 p->next = t->next;

									 FactStuNum--;

									 Update = true;

									 delete t;

									}

									//////////////////////////////////////////////////////////

									class Manage

									{

									private:

									 Student*StuRoot;

									 Subject*SubRoot;

									 bool Update;

									public:

									 Manage() :StuRoot(new Student()), SubRoot(new Subject()),Update(false){}

									 Manage(const Manage&p){}

									 void AddStu();

									 void AddSub();

									 Student*FindStu(int num);

									 Subject*FindSub(int num);

									 int ShowSub()const;//显示可选课程

									 int ShowStu()const;

									 void ShowStuSubInfo(Student*p);

									 void DelStu(Student*p);

									 void DelSub(Subject*p);

									 void Start();

									 int menu();

									 int custom();

									 int server();

									 Student* password1();

									 bool password2();

									 void menu_1_1(Student*p);

									 void menu_2_1();

									 void menu_2_2();

									 void menu_2_3();

									 void menu_2_4();

									 void menu_2_5();

									 void menu_2_6();

									 void menu_2_7();

									 void menu_2_8();

									 void menu_2_9();

									 void IsUpdate()

									 {

									 if (Update == true)

									 {

									  Student*p = StuRoot->next;

									  Subject*q = SubRoot->next;

									  while (q)

									  {

									  float sum = 0;

									  StuList *t =q->GetStuPtr()->next;

									  while (t)

									  {

									   sum += t->score;

									   t = t->next;

									  }

									  q->SetAveGrade(sum);

									  q->SetUpdate(false);

									  q = q->next;

									  }

									  while (p)

									  {

									  float sum = 0, xuefen = 0, xuefen1 = 0;

									  SubList *t = p->GetSubPtr()->next;

									  while (t)

									  {

									   Subject*tt = FindSub(t->num);

									   xuefen += tt->GetCredit();

									   float f = tt->GetStuScore(p->GetNum());

									   sum += f;

									   if (f>= 60)

									   xuefen1 += tt->GetCredit();

									   t = t->next;

									  }

									  p->SetInfo(xuefen, xuefen1, sum);

									  p->SetUpdate(false);

									  p= p->next;

									  }

									  Update = false;

									 }

									 }

									};

									void Manage::DelStu(Student*p)

									{

									 SubList *l = p->GetSubPtr()->next;

									 while (l)

									 {

									 FindSub(l->num)->DelStu(p->GetNum());

									 l = l->next;

									 }

									 Student*t = StuRoot;

									 while (t->next != p)

									 t = t->next;

									 t->next = p->next;

									 delete p;

									 Update = true;

									}

									void Manage::DelSub(Subject*p)

									{

									 StuList *l = p->GetStuPtr()->next;

									 while (l)

									 {

									 FindStu(l->num)->DelSub(p->GetNum());

									 l = l->next;

									 }

									 Subject*t = SubRoot;

									 while (t->next != p)

									 t = t->next;

									 t->next = p->next;

									 delete p;

									 Update = true;

									}

									int Manage::ShowSub()const

									{

									 Subject*p = SubRoot->next;

									 int n = 0;

									 while (p)

									 {

									 cout << p->GetNum() << " " << p->GetName() << " 学分：" << p->GetCredit() << endl;

									 n++;

									 p = p->next;

									 }

									 return n;

									}

									int Manage::ShowStu()const

									{

									 Student*p = StuRoot->next;

									 int n = 0;

									 while (p)

									 {

									 cout << p->GetNum() << " " << p->GetName() << endl;

									 n++;

									 p = p->next;

									 }

									 return n;

									}

									Student*Manage::FindStu(int num)

									{

									 Student*p = StuRoot->next;

									 while (p)

									 {

									 if (p->GetNum() == num)

									  break;

									 p = p->next;

									 }

									 return p;

									}

									Subject*Manage::FindSub(int num)

									{

									 Subject*p = SubRoot->next;

									 while (p)

									 {

									 if (p->GetNum() == num)

									  break;

									 p = p->next;

									 }

									 return p;

									}

									//总菜单 

									int Manage::menu()

									{

									 int k = 0, n;

									 while (1)

									 {

									 system("cls");

									 cout << endl << endl;

									 cout << "*******************************************\n"

									  << "*                     *\n"

									  << "*       学生选修课系统       *\n"

									  << "*                     *\n"

									  << "*   操作方式:              *\n"

									  << "*        1.选修课系统学生端    *\n"

									  << "*                     *\n"

									  << "*        2.选修课系统管理端    *\n"

									  << "*        0. 退出          *\n"

									  << "*******************************************\n"

									  << endl;

									 cout << "\n\t\t请选择登入方式: ";

									 cin >> n;

									 if (n > -1 && n < 3)

									  return n;

									 else

									 {

									  cerr << "\n\n\t\t\t\t输入有误!\n" << endl;

									  k++;

									 }

									 if (k == 3)

									 {

									  cerr << "\n\n\n\t\t~~提示~~:错误输入次数超过三次，你将被强制退出!!\n\n" << endl;

									  return 0;

									 }

									 system("pause");

									 }

									}

									//选修课系统端操作 

									int Manage::custom()

									{

									 int n, k = 0;

									 while (1)

									 {

									 system("cls");;

									 cout << "\n\n\n" << "※※※※※※※※※※※※※※※※※※※※※※※※※※\n"

									  << "※        选修课系统学生端        ※\n"

									  << "※                        ※\n"

									  << "※          操作方式:.         ※\n"

									  << "※          1、 学生选课         ※\n"

									  << "※          2、 学生情况         ※\n"

									  << "※          3、 选课情况         ※\n"

									  << "※          4、 退出系统         ※\n"

									  << "※                        ※\n"

									  << "※※※※※※※※※※※※※※※※※※※※※※※※※※\n" << endl;

									 cout << "\t\t\t请选择操作方式: ";

									 cin >> n;

									 if (n > 0 && n < 5)

									  return n;

									 else

									 {

									  cerr << "\n\t\t\t\t输入有误!请重新输入\n" << endl;

									  k++;

									 }

									 if (k == 3)

									 {

									  system("cls");

									  cerr << "错误输入超过三次!你将被强制退出!!\n" << endl;

									  return 4;

									 }

									 system("pause");

									 }

									}

									int Manage::server()

									{

									 int n, k = 0;

									 while (1)

									 {

									 system("cls");;

									 cout << "\n\n\n" << "※※※※※※※※※※※※※※※※※※※※※※※※※\n"

									  << "※                       ※\n"

									  << "※         选修课系统管理端       ※\n"

									  << "※                       ※\n"

									  << "※  操作方式:                 ※\n"

									  << "※      1.增加学生   2.增加课程     ※\n"

									  << "※      3.删除学生   4.删除课程     ※\n"

									  << "※      5.填写成绩   6.更改学分     ※\n"

									  << "※      7.学生情况   8.选课情况     ※\n"

									  << "※      9.保存数据   0.退出系统     ※\n"

									  << "※                       ※\n"

									  << "※※※※※※※※※※※※※※※※※※※※※※※※※\n" << endl;

									 cout << "\t\t 请选择操作方式: " << endl;

									 cin >> n;

									 if (n > -1 && n < 10)

									  return n;

									 else

									 {

									  cerr << "\n\t\t\t\t输入有误!\n" << endl;

									  k++;

									 }

									 if (k == 3)

									 {

									  cerr << "错误输入超过三次!\n";

									  return 0;

									 }

									 system("pause");

									 }

									}

									Student* Manage::password1()

									{

									 system("cls");

									 int k = 0;

									 int num;

									 while (1)

									 {

									 cout << "请输入你的学号：" << endl;

									 cin >> num;

									 Student*p = FindStu(num);

									 if (p == NULL)

									 {

									  cout << "无此学号！!请重新输入 " << endl;

									  k++; 

									  system("pause");

									 }

									 else

									 {

									  cout << "你的名字为：" << p->GetName() << endl;

									  cout << "请按任意键进入选课系统" << endl;

									  return p;

									 }

									 if (k >= 3)

									 {

									  system("cls");

									  cerr << "\n\n\t\t\t输入错误密码超过三次!请按任意键退出.." << endl;

									  return NULL;

									 }

									 }

									}

									//密码检查 

									bool Manage::password2()

									{

									 int k = 0, i;

									 const char A[] = "admin";

									 char B[10];

									 system("cls");

									 for (i = 0; i < 8; i++)

									 cout << endl;

									 while (1)

									 {

									 printf("\t\t\t请输入管理员密码:");

									 i = 0;

									 cin >> B;

									 if (strcmp(A, B) == 0)

									  return true;

									 else

									 {

									  k++;

									  cerr << "\n\n\t\t\t密码输入错误!请重新输入!\n" << endl;

									  system("pause");

									 }

									 if (k ==3)

									 {

									  system("cls");

									  cerr << "\n\n\t\t\t输入错误密码超过三次!请按任意键退出.." << endl;

									  return false;

									 }

									 }

									}

									void Manage::Start()

									{

									 int n = 1;

									 while (n)

									 {

									 n = menu();

									 if (n == 1)

									 {

									  Student*p = password1();

									  while (p)

									  {

									  int c = custom();

									  switch (c)

									  {

									  case 1: menu_1_1(p); break;//学生选课  

									  case 2:p->ShowStuInfo(); break;//学生情况 

									  case 3:ShowStuSubInfo(p);; break;//选课情况 

									  }

									  IsUpdate();

									  if (c == 4) break;//退出系统 

									  }

									  if (p == NULL)

									  n = 0;

									 }

									 else if (n == 2)

									 {

									  bool t = password2();

									  while (t)

									  {

									  int c = server();

									  switch (c)

									  {

									  case 1:menu_2_1();  break;  //增加学生 

									  case 2:menu_2_2(); break;  //增加课程 

									  case 3: menu_2_3(); break;  //删除学生  

									  case 4:menu_2_4();  break;  //删除课程  

									  case 5: menu_2_5(); break;  //填写成绩 

									  case 6: menu_2_6(); break;  //更改学分 

									  case 7:menu_2_7();  break;  //学生情况 

									  case 8:menu_2_8();  break;  //选课情况 

									  case 9: menu_2_9(); break;  //保存数据 

									  }

									  IsUpdate();

									  if (c == 0)   break;  //退出系统 

									  }

									  if (!t)

									  n = 0;

									 }

									 }

									}

									//学生端功能函数 

									void Manage::menu_1_1(Student*p)  //学生选课

									{

									 if (p->IsFull())

									 cout << "你的课程已经选满了" << endl;

									 else

									 {

									 int num;

									 if (ShowSub()==0)

									  cout << "无课程可以选择" << endl;

									 else

									 {

									  cout << "请输入你的选择" << endl;

									  cin >> num;

									  if (p->FindSub(num))

									  cout << "此课程你已经选择" << endl;

									  else if (FindSub(num)->IsFull())

									  cout << "课程人数已满" << endl;

									  else

									  {

									  p->AddSub(num);

									  FindSub(num)->AddStu(p->GetNum());

									  cout << "选课成功" << endl;

									  }

									 }

									 }

									 Update = true;

									 system("pause");

									}

									void Manage::ShowStuSubInfo(Student*p)

									{

									 SubList*l = p->GetSubPtr()->next;

									 cout << p->GetNum() << " " << p->GetName() << " 选课数" << p->GetFactSubNum() << endl;

									 while (l)

									 {

									 Subject*s = FindSub(l->num);

									 cout << "\t\t" << s->GetNum() << " " << s->GetName() << " " << s->GetCredit() << endl;

									 float f = s->GetStuScore(p->GetNum());

									 cout << "\t\t 成绩 " << f << endl;

									 cout << "------------------------------" << endl;

									 l = l->next;

									 }

									}

									//管理端功能函数

									void Manage::menu_2_1()  //增加学生 

									{

									 system("cls");

									 int num;

									 char name[20];

									 cout << "\n\n\t\t\t\t增加学生操作\n" << endl;

									 cout << "\n\n\t\t请输入学生学号:";

									 cin >> num;

									 if (FindStu(num))

									 cout << "学生已经存在" << endl;

									 else

									 {

									 cout << "\n\n\t\t请输入学生姓名:";

									 cin >> name;

									 Student*p = new Student();

									 p->SetNum(num);

									 p->SetName(name);

									 Student *root = StuRoot;

									 while (root->next)

									  root = root->next;

									 root->next = p;

									 cout << endl << "\t\t增加学生操作成功,按任意键继续" << endl;

									 }

									 system("pause");

									}

									void Manage::menu_2_2()  //增加课程 

									{

									 system("cls");

									 int num;

									 float credit;

									 char name[20];

									 cout << "\n\n\t\t\t\t增加课程操作\n" << endl;

									 cout << "\n\n\t\t 请输入课程代号:";

									 cin >> num;

									 if (FindSub(num))

									 cout << "\n\t\t此课程已经存在,按任意键继续" << endl;

									 else

									 {

									 cout << "\n\n\t\t请输入课程名:";

									 cin >> name;

									 cout << "请输入课程学分" << endl;

									 cin >> credit;

									 Subject*p = new Subject();

									 p->SetNum(num);

									 p->SetName(name);

									 p->SetCredit(credit);

									 Subject *root = SubRoot;

									 while (root->next)

									  root = root->next;

									 root->next = p;

									 cout << endl << "\t\t增加课程操作成功,按任意键继续" << endl;

									 }

									 system("pause");

									}

									void Manage::menu_2_3() //删除学生 

									{

									 system("cls");

									 cout << "\n\n\t\t\t\t删除学生操作" << endl;

									 if (ShowStu()==0)

									 cout << "无学生" << endl;

									 else

									 {

									 int num;

									 cout << "\n\t请输入要删除的学生代学号:";

									 cin >> num;

									 Student*p = FindStu(num);

									 if (p == NULL)

									  cout << "无此学生" << endl;

									 else

									 {

									  DelStu(p);

									  cout << "\n\t\t删除学生操作成功,按任意键继续.." << endl;

									 }

									 }

									 system("pause");

									}

									void Manage::menu_2_4()  //删除课程 

									{

									 system("cls");

									 cout << "\n\n\t\t\t\t删除课程操作" << endl;

									 if (ShowSub()==0)

									 cout << "无课程" << endl;

									 else

									 {

									 int num;

									 cout << "\n\t请输入要删除的课程代号:";

									 cin >> num;

									 Subject*p = FindSub(num);

									 if (p == NULL)

									  cout << "无此课程" << endl;

									 else

									 {

									  DelSub(p);

									  cout << "\n\t\t删除课程操作成功,按任意键继续.." << endl;

									 }

									 }

									 system("pause");

									}

									void Manage::menu_2_5()  //填写成绩 

									{

									 system("cls");

									 cout << "\n\n\t\t\t\t 填写成绩操作\n" << endl;

									 if (ShowSub()==0)

									 cout << "\n\n\n\t\t对不起,暂时没有任何选修课程。请按任意键继续.." << endl;

									 else

									 {

									 int num;

									 cout << "请选择课程代号" << endl;

									 cin >> num;

									 Subject*p = FindSub(num);

									 if (p == NULL)

									  cerr << "\n\t\t没有此课程!!请按任意键继续.." << endl;

									 else

									 {

									  cout << p->GetNum() << " 课程名称" << p->GetName() << " 选课人数" << p->GetFactStuNum() << endl;

									  int n;

									  cout << "请输入1确认开始填写成绩,按其他键退出" << endl;

									  cin >> n;

									  if (n == 1)

									  {

									  StuList*q = p->GetStuPtr()->next;

									  while (q)

									  {

									   Student*l = FindStu(q->num);

									   cout << "\n\n\t\t请填写" << q->num << " " << l->GetName() << "的学生成绩\n" << endl;

									   cin >> q->score;

									   l->SetUpdate(true);

									   q = q->next;

									  }

									  p->SetUpdate(true);

									  }

									 }

									 }

									 Update = true;

									 system("pause");

									}

									void Manage::menu_2_6()  //更改学分 

									{

									 system("cls");

									 cout << "\n\n\n\t\t\t\t更改学分操作\n" << endl;

									 if (ShowSub()==0)

									 cout << "\n\n\n\t\t对不起,暂时没有任何课程。请按任意键继续.." << endl;

									 else

									 {

									 int num;

									 cout << "请选择课程代号" << endl;

									 cin >> num;

									 Subject*p = FindSub(num);

									 if (p == NULL)

									  cout << "无此课程" << endl;

									 else

									 {

									  float n;

									  cout << "\n\t\t\t原来学分为:" << p->GetCredit() << endl;

									  cout << "\n\t\t\t现要更改为:";

									  cin >> n;

									  p->SetCredit(n);

									  StuList*q = p->GetStuPtr()->next;

									  while (q)

									  {

									  FindStu(q->num)->SetUpdate(true);

									  q = q->next;

									  }

									  cout << "\n\t\t更改课程学分成功,按任意键继续" << endl;

									 }

									 }

									 Update = true;

									 system("pause");

									}

									void Manage::menu_2_7()

									{

									 Student *p = StuRoot->next;

									 if (p == NULL)

									 cout << "无记录" << endl;

									 else

									 while (p)

									 {

									  ShowStuSubInfo(p);

									  p = p->next;

									 }

									 system("pause");

									}

									void Manage::menu_2_8()  //选课情况

									{

									 system("cls");

									 cout << "\n\n\t\t\t\t选课情况操作" << endl;

									 if (ShowSub()==0)

									 cout << "\n\n\n\t\t对不起,暂时没有课程!!请按任意键继续.." << endl;

									 else

									 {

									 int num;

									 cout << "\n\t请输入要查看的课程代号:";

									 cin >> num;

									 Subject*p = FindSub(num);

									 if (p == NULL)

									  cout << "\n\t\t无此课程!!\t请按任意键继续.." << endl;

									 else

									 {

									  cout << p->GetNum() << " " << p->GetName() << " " << p->GetCredit() << endl;

									  cout << "\t\t最大人数:" << p->GetMaxStuNum() << " " << "实际人数" << p->GetFactStuNum() << endl;

									  StuList*q = p->GetStuPtr()->next;

									  while (q)

									  {

									  cout <<q->num << " " << FindStu(q->num)->GetName() << " " << q->score << endl;

									  q = q->next;

									  }

									 }

									 }

									 system("pause");

									}

									 /*保存数据 不过没有读取函数 这个功能就没有 读取懒的写了... */

									void Manage::menu_2_9() 

									{

									 Student*p = StuRoot->next;

									 ofstream o("Student.txt",32);

									 ofstream oo("SubList.txt", 32);

									 while (p)

									 {

									 SubList*t=p->GetSubPtr()->next;

									 o.write(reinterpret_cast<char*>(p), sizeof(*p));

									 while (t)

									 {

									  oo.write(reinterpret_cast<char*>(t), sizeof(*t));

									  t = t->next;

									 }

									 p = p->next;

									 }

									 o.close();

									 oo.close();

									 Subject*q = SubRoot->next;

									 o.open("Subject.txt", 32);

									 oo.open("StuList.txt", 32);

									 while (q)

									 {

									 StuList*t = q->GetStuPtr()->next;

									 o.write(reinterpret_cast<char*>(q), sizeof(*q));

									 while (t)

									 {

									  oo.write(reinterpret_cast<char*>(t), sizeof(*t));

									  t = t->next;

									 }

									 q = q->next;

									 }

									 o.close();

									 oo.close();

									 cout << "\n\n\n\t\t\t保存数据成功!按任意键继续.." << endl;

									 system("pause");

									}

									int main()

									{

									 Manage m;

									 m.Start();

									 return 0;

									}