#include<iostream>
#include<string>
using namespace std;
class Teacher
{public:

Teacher(int n,string nam,char s)
{num=n;
 name=nam;
 sex=s;
}
void display();
protected:
 int num;
 string name;
 char sex;
};
void Teacher::display()
{cout<<"num="<<num<<endl;
cout<<"name="<<name<<endl;
cout<<"sex="<<sex<<endl;}

class BirthDate
{ public:
BirthDate(int y,int m,int d)
{year=y;month=m;day=d;}
void display();
protected:
 int year;
 int month;
 int day;

};

class Professor:public Teacher,public BirthDate
{public:
Professor(int n,string nam,char s,int y,int m,int d):
Teacher(n,nam,s),BirthDate(y,m,d){}
void display();

private:

};

void Professor::display()
{cout<<"num="<<num<<endl;
cout<<"name="<<name<<endl;
cout<<"sex="<<sex<<endl;
cout<<"year="<<year<<endl;
cout<<"month="<<month<<endl;
cout<<"day="<<day<<endl;
}

int main()
{   Teacher t(123,"asd",'k');
 Professor prof1(072211101,"zhoudongdong",'man',2009,5,18);
Teacher *pt=&t;
pt->display();
pt=&prof1;
pt->display();
return 0;
}