#include
    
     #include 
     
      #include
      
       using namespace std;class sj{public :int year,month,day;void shuru(){cin>>year>>month>>day;}};class student{public :	string xm,kc[5];	int bj,xh,cj[5];	sj time;	void sr()	{cout<<"请输入学号";		cin>>xh;		 system("cls");		cout<<"请输入姓名";		cin>>xm;		 system("cls");		 cout<<"请输入入学日期中间用空格隔开";		 time.shuru();		  system("cls") ;		cout<<"请输入班级";		cin>>bj;		 system("cls");		 cout<<"请输入课程（5门）中间用空格隔开";		for(int i=0;i<5;i++)			cin>>kc[i];		  system("cls");		  }	void shuruchengji()	{int i;		for(i=1;i<6;i++)		{			cout<<"请输入"<
       
        <<"的成绩";			cin>>cj[i];		}	}};string mima(){cout<<"请设置密码:";string mm1,mm2;char ch; while ((ch=_getch())!=13) {  mm1+=ch;  cout<<"*"; } 	 cout<
        
         <<"请再次确认密码:";while ((ch=_getch())!=13) {  mm2+=ch;  cout<<"*"; }	 system("cls");if(mm1==mm2)return mm1;elsemima();}int denglu(string mm){	cout<<"请输入登陆密码：";	string mm1;	char ch; while ((ch=_getch())!=13) {  mm1+=ch;  cout<<"*"; }	 system("cls");	if(mm==mm1)		return 1;	else	{cout<<"密码错误，您还有两次机会，请重试";     while ((ch=_getch())!=13) {  mm1+=ch;  cout<<"*"; }	 	 system("cls");	 if(mm==mm1)		return 1;	else	{cout<<"密码错误，您还有一次机会，请重试";     while ((ch=_getch())!=13) {  mm1+=ch;  cout<<"*"; }	 	 system("cls");	 if(mm==mm1)		return 1;	else	{cout<<"密码错误，请明天再试";	return 0;}	}	}}	int main()	{int n,i;	string mm;	student stu[500];	mm=mima();	i=denglu(mm);	if(i)	{	cout<<"请输入学生人数: ";	cin>>n;		 system("cls");	for(i=0;i
         
          >a) }return 0; }