重载<<运算符C++ - 指向类的指针

#include<iostream>

class Person {
public:
    Person(const std::string& name, int age) : name_(name), age_(age) {}

    friend std::ostream& operator<<(std::ostream& os, const Person& person);

private:
    std::string name_;
    int age_;
};

std::ostream& operator<<(std::ostream& os, const Person& person) {
    os << "Name: "<< person.name_ << ", Age: "<< person.age_;
    return os;
}

int main() {
    Person p("John Doe", 30);
    std::cout << &p << std::endl;
    return 0;
}