自考新教材-p274_2

源程序：

#include <iostream>
using namespace std;

class Base
{
public:
virtual void fun()
{
cout << "Base::fun()" << endl;
}
};

class Derived :public Base
{
public:
virtual void fun()
{
cout << "Derived::fun()" << endl;
}
};

void FunTest()
{
Base b;
Derived d;
b.fun();
d.fun();
}
int main()
{
FunTest();
system("pause");
return 1;
}

运行结果：