达内学习笔记——成员指针

struct date{

        int year;

int mouth;

int day; 

}

date d = {1991,8,10};

int data::*mp  //mp即为成员指针

mp =  &date::day;  //mp指向data中的day

cout << d.*mp  ;//类似于 d.day

mp = &date::year; //mp指向date中year

cout<<d.*mp ;//类似于d.year;