覆盖实例

#include<iostream>

using namespace std;

class A

{

protected:

int m_data;

public:

A(int data = 0)

{

m_data = data;

}

int GetData()

{

return doGetData();

}

virtual int doGetData()

{

return m_data;

}

};

class B :public A

{

protected:

int m_data;

public:

B(int data = 1)

{

m_data = data;

}

int doGetData()

{

return m_data;

}

};

class C :public B

{

protected:

int m_data;

public:

C(int data = 2)

{

m_data = data;

}

};

int main()

{

C c(10);

cout << c.GetData() << endl;

cout << c.A::GetData() << endl;

cout << c.B::GetData() << endl;

cout << c.C::GetData() << endl;

cout << c.doGetData() << endl;

cout << c.A::doGetData() << endl;

cout << c.B::doGetData() << endl;

cout << c.C::doGetData() << endl;

system("pause");

return 0;

}

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