[C++] 如何不用虚函数实现多态

#include "stdafx.h"

typedef void (*fVoid)();

class A
{
public:
        static void test()
        {
                printf("hello A\n");
        }

        fVoid print;

        A()
        {
                print = A::test;
        }
};

class B : public A
{
public:
        static void test()
        {
                printf("hello B\n");
        }

        B()
        {
                print = B::test;
        }
};

int main()
{
        A aa;
        aa.print();

        B b;
        A* a = &b;
        a->print();

        getchar();

        return 0;
}