构造与析构的次序

#include<stdio.h>
#include<iostream>
using namespace std;

class base1{
public:
    base1(){
        printf("start base1
");    
    }
    ~base1(){
        printf("end base1
");
    }
private:
    int mx,my;
    int mi,mj;
};

class base2:public base1{
public:
    base2(){
        printf("start base2
");    
    }
    ~base2(){
        printf("end base2
");
    }
private:
    int mx,my;
    int mi,mj;
};

class base3:public base2{
public:
    base3(){
        printf("start base3
");    
    }
    ~base3(){
        printf("end base3
");
    }
private:
    int mx,my;
    int mi,mj;
};

int main(){
    base3 *temp1=new base3;
    delete temp1;
}

可以明显的看到构造的时候，从基类开始逐渐到当前类

而析构的过程是，从当前类逐渐到基类