有如下程序：
#include
using namespace std;
class Base
{
public:
void funl(){cout<<"Base\n";}
virtual void fun2(){cout<<"Base\n";}
};
class Derived:public Base
{
public:
void funl(){cout<<"Derived\n";}
void fun2(){cout<<"Derived\n";}
};
void f(Base &
B ． {b.funl();b.fun2();}&, lt;, /P>
int main()
{
Derived obj;
f(obj);
return 0;
}
执行这个程序的输出结果是
A ． Base Base
B ． Base Derived
C ． Derived Base
D ． Derived Derived
