C++中关于指针运算符->的重载问题
#include<iostream>
using namespace std;
struct date{
int year;
int month;
int day;
};
struct Person{
string name;
int age;
bool gender;
double salary;
date birth;
Person()
{
cout<<"创建persond对象"<<this<<endl;
age=10;
}
~Person()
{
cout<<"释放persond对象"<<endl;
}
};
class autoptr{
public:
Person *p;
public:
autoptr(Person *p):p(p){cout<<this<<endl;}
~autoptr(){delete p;}
Person * operator->(){
return p;
}
};
int main()
{
//autoptr *a=new autoptr(new Person);
cout<<"=============================="<<endl;
autoptr b=new Person;
cout<<b->age<<endl;//b->age就相当于(b.operator->())->age,也就意味着->符号很特殊,重载之后,利用b->age这种调用方式,编译器会自动给它加一个->已达到指针变量调用的目的
cout<<(b.operator->())->age<<endl;
system("pause");
}