理想的菱形继承如图所示

#include "iostream"

using namespace std;

class top
{
    public:
    void baseshow()
    {
        cout << "baseshow" << endl;
    }
};

class left:public::top
{
    public:
    void leftshow()
    {
        cout << "leftshow" << endl;
    }
};

class right:public::top
{
    public:
    void rightshow()
    {
        cout << "rightshow" << endl;
    }
};

class bottom:public left,public right
{
    public:
    void bottomshow()
    {
        
    }
};


int main()
{
    bottom rlxy;
    rlxy.bottomshow();
}

实际上的类型继承如图所示

通过查看代码，发现报错信息为基类有歧义

未完-晚上补上