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C++大学选修课系统设计第10页

更新时间：2010-3-7: 来源：毕业论文

C++大学选修课系统设计第10页
}
file.close();

fstream file1("student.txt",ios::out);
fstream file2("course.txt",ios::out);
while(Z)
{
  file1.write ((char *)&(Z->stu),sizeof(Z->stu));
  int time = Z->stu.retfactcourse();
  course *co = Z->stu.retroot(),*co1;
  if(co!=NULL)
  co1 = co->Next;
        while(time)
  {
   file2.write((char *)(co1),sizeof(*co1));
   co1 = co1->Next;
   time = time - 1;
  }
  Z = Z->Next;
}
file2.close ();
file1.close();

cout<<"\n\n\n\t\t\t保存数据成功!按任意键继续.."<<endl;
return 1;
}
int menu_2_0() //退出系统
{
tuichu();
return 0;
}

int main()
{
subjectdb *P = new subjectdb,*Q=P;
P->Next = NULL;
subject M;
fstream file("subject.txt",ios::in);
while(1)
{
  file.read((char *)&M,sizeof(M));
  if(!file) break;
  Q->Next = new subjectdb;
www.751com.cn
file.close ();

studentdb *Y = new studentdb,*X=Y;
Y->Next=NULL;
student N;
course O;
fstream file1("student.txt",ios::in);
fstream file2("course.txt",ios::in);
while(1)
{
  file1.read((char *)&N,sizeof(N));
  if(!file1) break;
  Y->Next = new studentdb;
  Y->Next ->Next = NULL;
  Y->Next ->stu = N;
  int time = N.retfactcourse();
  Y->Next->stu.clrroot ();
  while(time)
  {
   file2.read ((char *)&O,sizeof(course));
   if(!file2) break;
   Y->Next->stu.addcourse(O.cname ,O.grade);
   time--;
  }
  Y=Y->Next;
}
file2.close ();
file1.close ();
    Q=P->Next;
while(Q)
{
  Q->sub.clractivestudnet();
    Q->sub.findstudent(X);
  Q = Q->Next;
}
char c;
char b;
int br=1;
b = menu();
if(b=='1')
{www.751com.cn
  while(1)
  {
   c = custom();
   switch(c)
   {
   case '1':br = menu_1_1(X,P);getch();break; //学生选课
   case '2':br = menu_1_2(X,P);getch();break; //学生情况
         case '3':br = menu_1_3(P);getch(); break; //选课情况
         case '4':br = menu_1_4(X,P);        break; //退出系统
   }
   if (br == 0)
    break;
  }
}
if(b=='2')
{
     password();
  while(1)
  {
   c = server();
   switch(c)
   {
   case '1':br = menu_2_1(X);getch(); break;   //增加学生
         case '2':br = menu_2_2(P);getch(); break;   //增加课程
         case '4':br = menu_2_4(P);getch(); break;   //删除课程
         case '3':br = menu_2_3(X);getch(); break;   //删除学生
   case '5':br = menu_2_5(X,P);getch();break;   //填写成绩
         case '6':br = menu_2_6(P);getch(); break;   //更改学分
         case '7':br = menu_2_7(X);getch(); break;   //学生情况
         case '8':br = menu_2_8(P);getch(); break;   //选课情况
         case '9':br = menu_2_9(X,P);getch();break;   //保存数据
         case '0':br = menu_2_0();break;              //退出系统
   }
   if (br == 0)
    break;
  }
}
return 0;