#include "stdafx.h"
#include <iostream>
using namespace std;
template <class T>
class CFinalClass
{
friend T;
private:
CFinalClass(){}
~CFinalClass(){}
};
class CXX
{
public:
CXX(){ cout << "I am CXX!"<<endl;}
~CXX(){}
};
class CParent:virtual public CFinalClass<CParent>,public CXX
{
public:
CParent(){}
~CParent(){}
};
class CChild:public CParent{};
int _tmain(int argc, _TCHAR* argv[])
{
CParent p;
//CChild c;
return 0;
#include <iostream>
using namespace std;
template <class T>
class CFinalClass
{
friend T;
private:
CFinalClass(){}
~CFinalClass(){}
};
class CXX
{
public:
CXX(){ cout << "I am CXX!"<<endl;}
~CXX(){}
};
class CParent:virtual public CFinalClass<CParent>,public CXX
{
public:
CParent(){}
~CParent(){}
};
class CChild:public CParent{};
int _tmain(int argc, _TCHAR* argv[])
{
CParent p;
//CChild c;
return 0;
}
利用c++中的友元类的特性----友元不能被继承
还需要强调一下,调用CFinalClass类,一定要虚继承。虚继承的一个特征就是虚基类的构造函数由最终子类负责构造!