1.思维导图

 

 

 

2.有以下类定义，按要求实现剩余功能

#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
    //拷贝赋值函数
    //析构函数
};

int main()
{
    
    return 0;
}

补充后

#include <iostream>
using namespace std;

class Person
{
private:
    int age;
    int *p;
public:
    //1.无参构造
    Person():p(new int(89))
    {
        age = 18;
    }
    //2.有参构造
    Person(int age,int num)
    {
        this->age = age;
        this->p=new int(num);
    }
    //3.拷贝构造函数
    Person(Person &other)
    {
        age=other.age;
        //浅拷贝
//        p=other.p;
        //深拷贝
        p=new int;
        *p=*(other.p);
        cout << "Person拷贝构造函数" << endl;

    }
    //4.拷贝赋值函数
    Person &operator=(Person &other)
       {
           if(this!=&other)
           {
               age = other.age;
               //浅拷贝
               //point = other.point;
               //深拷贝
               *p = *(other.p);
               cout << "Person拷贝赋值函数" << endl;
           }
           return *this;   //返回类对象本身
       }
    //5.析构函数
    ~Person()
    {
        delete p;
        p=nullptr;
        cout << "释放那个了p指向的空间" << endl;
        cout << "Person的析构函数" << endl;
    }
    void show()
    {
        cout<<"age="<<age<<endl;
        cout<<"*p="<<*p<<endl;
        cout<<"p="<<p<<endl;
    }
};

int main()
{
    Person k1;
    cout<<"k1:"<<endl;
    k1.show();
    cout<<"-----------------------------"<<endl;
    Person k2(20,99);
    cout<<"k2:"<<endl;
    k2.show();
    cout<<"-----------------------------"<<endl;
    cout<<"---------拷贝构造函数----------"<<endl;
    Person k3=k2;
    cout<<"k3:"<<endl;
    k3.show();
    cout<<"-----------------------------"<<endl;
    cout<<"---------拷贝赋值函数----------"<<endl;
    Person k4;
    k4=k2;
    cout<<"k4:"<<endl;
    k4.show();

    cout<<"-----------------------------"<<endl<<endl;
    return 0;
}