一. 思维导图

二. 练习

#include <iostream>
using namespace std;

class Person
{
private:
    int age;
    int *p;
public:
    //无参构造
    Person():p(new int(89))
    {
        age = 18;
    }
    //有参构造
    Person(int age,int num)
    {
        this->age = age;
        this->p=new int(num);
    }
    //拷贝构造函数
    Person(Person &other) {
        this->age = other.age;
        //浅拷贝
        //this->p = other.p;
        //深拷贝
        if (this != &other) {
            this->p = new int;
        }
        *(this->p) = *(other.p);
    }
    //拷贝赋值函数
    Person &operator=(const Person &other){
        this->age = other.age;
        *(this->p) = *(other.p);
        return *this;
    }
    //析构函数
    ~Person(){
        delete p;
    }
};

int main()
{
    
    return 0;
}