和普通的构造器析构器类似,不过在继承的类中进行操作

#include <iostream>
#include <string>

class BaseClass
{
public:
    BaseClass();
    ~BaseClass();

    void doSomething();
};

class SubClass : public BaseClass
{
public:
    SubClass();
    ~SubClass();
};

BaseClass::BaseClass()
{
    std::cout<<"进入基类构造器"<<std::endl;
};

BaseClass::~BaseClass()
{
    std::cout<<"进入基类析构器"<<std::endl;
};

void BaseClass::doSomething()
{
    std::cout<<"doSomething做些事情"<<std::endl;

}

SubClass::SubClass()
{
        std::cout<<"进入子类构造器,"<<std::endl;
}

SubClass::~SubClass()
{
         std::cout<<"进入子类析构器,"<<std::endl;
}   


int main()
{
    SubClass subclass;
    subclass.doSomething();

    std::cout<<"结束"<<std::endl;

    return 0;
}