多继承以及虚基类

/* 多继承以及虚基类 */
#include<iostream>

using namespace std;


// 只有多继承 才产生虚基类

class base // 虚基类
{
public:
    base()
    {
        cout << "base create" << endl
    }

    ~base()
    {
        cout << "base delete" << endl
    }
    
    int x;
};

class baseA : virtual public base// 虚继承
{
public:
    baseA()
    {
        cout << "baseA create" << endl
    }

    ~baseA()
    {
        cout << "baseA delete" << endl
    }
};


class baseB : virtual public base
{
public:
    baseB()
    {
        cout << "baseB create" << endl
    }

    ~baseB()
    {
        cout << "baseB delete" << endl
    }
};

class baseAB : public baseA,public baseB
{
public:
    baseAB()
    {
        cout << "baseAB create" << endl
    }

    ~baseAB()
    {
        cout << "baseAB delete" << endl
    }
};

void main()
{
    //baseA *p = new baseA;

    //baseAB *p = new baseAB;
    //delete p;

    baseAB *p = new baseAB;
    //p->x;// 产生二义性
    p->baseA::x;
    p->baseB::x;

    delete p;
    
    cin.get();
}