一道编程类笔试题

时间：2020-10-15 17:11:27 笔试题目我要投稿

一道编程类笔试题

#include <iostream>
using namespace std;

一道编程类笔试题

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;
}

///////////////////////////////////////////////////////
运行的结果是
1
1
1
1
1
0
1
1

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