1. 整理思维导图
2. 在课上练习的基础上，完成拷贝赋值函数
3. 完成下列类

#include <iostream>
using namespace std;

class person
{
    string name;
    int age;
    char sex;
public:
    int *p;
    person()
    {
        cout<<"person无参构造"<<endl;
    };
    person(const string n,int a,char s):name(n),age(a),sex(s)
    {
        cout<<"person有参构造"<<endl;
    }
    person(const person &other):p(new int(*(other.p)))
    {
        this->name=other.name;
        this->age=other.age;
        this->sex=other.sex;
    }
    person &operator=(const person &other)
    {
        if(&other!=this)
        {
            this->name=other.name;
            this->age=other.age;
            this->sex=other.sex;
        }
        return *this;
    }
    void show()
    {
        cout<<name<<age<<sex<<endl;
    }
    ~person()
    {
        delete p;
    }
};
class stu
{
    person p;
    double *score;
public:
    stu():p("张三",18,'m'),score(new double)
    {
        cout<<"stu无参构造"<<endl;
    }
    stu(const string n,int a,char s,double score):p(n,a,s),score(new double(score))
    {
        cout<<"stu有参构造"<<endl;
    }
    void show()
    {
        p.show();
        cout<<*score<<endl;
    }
    ~stu()
    {
        delete score;
    }
};

int main()
{
    person p1("zhangsan",18,'m');
    person p2(p1);
    person p3;
    p3=p2;
    p1.show();
    p2.show();
    p3.show();
    cout<<(p1.p)<<' '<<(p2.p)<<' '<<(p3.p)<<endl;
    return 0;
}