c++指针运算符重载-智能指针手动实现（某马）

#define _CRT_SECURE_NO_WARNINGS
#include
using namespace std;

class Person
{
public:
    Person(int age)
    {   
        cout << "Person的有参构造调用" << endl;
        this->m_Age = age;
    }

    void showAge()
    {
        cout << "年龄为： "<< this->m_Age << endl;
    }

    ~Person()
    {
        cout << "Person的析构调用" << endl;
    }

    int m_Age;
};

class SmartPoint
{
public:
    SmartPoint(Person * person)
    {
        this->m_person = person;
    }

    //重载->运算符
    Person * operator->()
    {
        return this->m_person;
    }
    //重载 * 运算符
    Person& operator*()
    {
        return *m_person;
    }
    ~SmartPoint()
    {
        if (this->m_person)
        {
            delete this->m_person;
            this->m_person = NULL;
        }
    }
private:
    Person * m_person;
};

void test01()
{
    //Person * p = new Person(18);
    //(*p).showAge();
    //p->showAge();
    //delete p;


    //利用智能指针 管理 new出来的person的释放操作
    SmartPoint sp(new Person(18));

    sp->showAge(); // 本质sp->->showAge(); 编译器简化为 sp->showAge();

    (*sp).showAge();

}


int main(){
    test01();

    system("pause");
    return EXIT_SUCCESS;
}