C++子类赋值给父类，调用。

#include "stdafx.h"
#include <iostream>
#include <stdlib.h>

using namespace  std;
class baseAB
{
		public:	baseAB(int aa,int bb):a(aa),b(bb)
		{
			 cout<<"base constrater"<<endl;
				}
		protected: int a;
		protected:int b;
		public:	  virtual void fun1()
		{
		    cout<<"basefun1"<<endl;
		}
		public: void fun2()
		{
		   cout<<"basefun2"<<endl;
		}

};
class A:public baseAB
{
public: 
	A(int aa,int bb,int cc): baseAB(aa,bb)
		{
			 cout<<"A constrater"<<endl;
			c=cc;
	    }
public: int c;
};
int _tmain(int argc, _TCHAR* argv[])
{
	A as(3,5,6);
	baseAB* pa = &as;
	pa->fun1();
	pa->fun2();
	//pa->c //error  访问不到
	int s=((A*)pa)->c;//容易被忽视的点
	char strbuff[10]={};
	itoa(s,strbuff,16);
	string s1(strbuff);
	cout<<s<<endl;

	system("pause");
	//Sleep(10000);
	return 0;
}