C++多态

有一个注意要点，必须用指针，不能用A a = B()的形式。

#include "stdafx.h"
#include "Base.h"
#include "Class2.h"

int _tmain(int argc, _TCHAR* argv[])
{
    Base* base = new Class2();
    base->Run();

    //Base Class Run Function will print "Base"
    //Class2 Class Run Function will print "Class2"
    //Execute program print "Class2"

    return 0;
}