类的特殊成员函数

使用类的嵌套，并自定义析构函数

#include <iostream>

using namespace std;
class Per{
private:
    string name;
    int age;
    double hight;
    double weight;
public:
    Per(string name,int age,double hight,double weight):name(name),age(age),hight(hight),weight(weight){
        cout << "Per初始化完成" << endl;
    }
    ~Per(){
        cout <<"Per析构函数" << this << endl;
    }
    void dipaly();
};
class Stu{
private:
    double score;
    Per* p1;
public:
    Stu(double score,Per p1):score(score),p1(new Per(p1)){
        cout << "Stu初始化完成" << endl;
    }
    ~Stu(){
        cout << "Stu析构函数" << this << endl;
        delete p1;
        p1=nullptr;
    }
    void show();
};
void Stu::show(){
    cout <<"score:" << score << endl;
    cout << "&p1=" << p1 <<endl;
}
void Per::dipaly(){
    cout << "name:" << name << "    age:" << age << "   hight:" << hight << "   weight:" << weight << endl;
}
int main()
{
    Per p("Tom",24,197.7,70.4);
    Stu S(99.9,p);
    cout << "&p=" << &p <<"  &S=" << &S <<endl;
    p.dipaly();
    S.show();
    return 0;
}