c++面试题6

#include<iostream>
using namespace std;

class parent
{
public:
parent(){}
~parent()
{
cout<<"do something in parent"<<endl;
}
};

class child : public parent
{
public:
child(){}
~child()
{
cout<<"do something in child"<<endl;
}
};

int main()
{
parent* p = new child;   //如果为加virtual说明析构函数只会调用父类的析构函数,会造成内存泄漏问题，
delete p;                //所以如果有继承关系应该将父类的析构函数加上virtual

return 0;
}
//print:do something in parent