成员指针

#include "stdafx.h"
#include<iostream>
#include<string>
using namespace std;
class Student
{
public:
    Student(const string & name = "",int age = 0):m_name(name),m_age(age){}
    string m_name;
    int m_age;
    static int m_data;
    static int add(int x , int y)
    {
        return x+y;
    }
    void who()
    {
        cout << m_name << " "
             << m_age << endl;
    }
};
int Student::m_data = 100;
int _tmain(int argc, _TCHAR* argv[])
{//成员变量指针
    string Student::*pname = &Student::m_name;//pname的初始化不需要对象，他将指向任何对象的m_name
    //存成员变量的偏移量，在解引用时，使用起始位置+偏移量

    int Student ::*page = &Student::m_age;
    Student s1("张飞",24),s2("赵云",25);
    //成员函数指针
    void (Student::*pwho)(void) = &Student::who;
    //成员指针时，取地址必须写
    cout << s1.*pname << endl;//(.*,成员指针解引用运算符->*间接成员指针解引用运算符)
    cout << s2.*pname <<endl;
    cout << s1.*page << endl;
    cout << s2.*page << endl;
    (s1.*pwho)();
    (s2.*pwho)();
    
    int *pdata = &Student::m_data;
    cout << *pdata << endl;
    int(*padd)(int ,int ) = Student ::add;
    cout << padd(100,200) << endl;

    system("pause");    
    return 0;
}