#pragma once#include "student.h"#include "Teacher.h"typedef enum _EPersonType{    ePersonUndefin = 0,    ePersonStudent,    ePersonTeacher}EPersonType;class Factory{public:    Factory(void);    ~Factory(void);    Person *CreatPerson(EPersonType personType);};Person* Factory::CreatPerson(EPersonType personType){    Person *pPerson = 0;    switch (personType)    {    case ePersonStudent:        {            pPerson = new Student();            break;        }    case ePersonTeacher:        {            pPerson = new Teacher();            break;        }    }    return pPerson;}#pragma once#include <iostream>using namespace std;class Person{public:    Person(void);    virtual ~Person(void);};#include "Person.h"Person::Person(void){}Person::~Person(void){}#pragma once#include "person.h"class Student :    public Person{public:    Student(void);    ~Student(void);};#include "Student.h"Student::Student(void){    cout<<"Student::Student()"<<endl;}#pragma once#include "person.h"class Teacher :    public Person{public:    Teacher(void);    ~Teacher(void);};#include "Teacher.h"Teacher::Teacher(void){    cout<<"Teacher::Teacher()"<<endl;}#include "Factory.h"int _tmain(int argc, _TCHAR* argv[]){    Factory factory;    factory.CreatPerson(ePersonStudent);//ePersonTeacher    return 0;}