#include<bits/stdc++.h>
using namespace std;

class animal{
    public:
        animal(){
            cout<<"调用animal构造"<<endl;
        }
        ~animal(){
            cout<<"调用animal析构"<<endl;
        }
};

class verhical{
    public:
        verhical(){
            cout<<"调用verhical构造"<<endl;
        }
        ~verhical(){
            cout<<"调用verhical析构"<<endl;
        }
};

class car:public verhical{
    public:
        car(){
            cout<<"调用car构造"<<endl;
        }
        ~car(){
            cout<<"调用car析构"<<endl;
        }
};

class person:public animal{
    public:
        person(){
            cout<<"调用person构造"<<endl;
        }
        ~person(){
            cout<<"调用person析构"<<endl;
        }
        car mycar;
};

int main(){
    person a;
    cout<<"-------------------"<<endl;
}

 自己运行一下就好了，先说结论：

构造：基类构造——>子对象构造——>派生类构造

析构：与构造完全相反：派生类析构——>子对象析构——>基类析构

需要注意的是，子对象构造与析构时，也是遵循上面的规律，套娃，你懂吧？