C++ public继承后，子类能改变父类的成员变量吗？

看下面例子：

#include <iostream>
using namespace std;

class Aclass
{
public:
int m_Anum;


public:
Aclass(){m_Anum = 0;}
~Aclass(){}
int GetAnum(){return m_Anum;}
};


class Bclass : public Aclass
{
public:
int m_Bnum;
public:
Bclass(){m_Bnum = 1;}
~Bclass(){}
int GetBnum(){return m_Bnum;}
};


int main() {
Bclass bclass;
bclass.m_Anum = 1;

Aclass aclass;
cout << "Aclass m_Anum:" << aclass.m_Anum<< endl;
cout << "Bclass m_Bnum:" << bclass.m_Bnum<< endl;

return 0;
}

程序结果输出:

Aclass m_Anum:0
Bclass m_Bnum:1

没有改变基类中的成员变量值。