c++ 派生类的复制函数次序，及子父类兼容性

#include <iostream>
using namespace std;
class CFatherSum         //父类Sum
{
public:
    CFatherSum(){cout<<"1,Default Constructing CFatherSum"<<endl;}//默认构造
    CFatherSum(int iRec){cout<<"1,Constructing CFatherSum"<<iRec<<endl;}//构造函数成员初始化
};
class CFatherBru        //父类Bru
{
public:
    CFatherBru(){cout<<"2,Default Constructing CFatherBru"<<endl;}//默认构造
    CFatherBru(int iRec){cout<<"2,Constructing CFatherBru"<<iRec<<endl;}//构造函数成员初始化
};
class CFatherObam         //父类Obam
{
public:
    //第一行用于对比默认构造
    //CFatherObam(int iRec){cout<<"3,Constructing CFatherObam"<<iRec<<endl;}//构造函数成员初始化
    CFatherObam(){cout<<"3,Default Constructing CFatherObam*"<<endl;}//默认构造
};
class CSon:public CFatherSum,public CFatherBru,public CFatherObam      //继承父Sum,Bru,Obam
{
public:
    CSon(int iFirst,int iSec,int iThir,int iFor):CFatherSum(iFirst),m_bru(iFor),m_sum(iThir),CFatherBru(iSec)
    {
        //CFatherObam(iFor),m_obam(iFor)        非默认构造时，须派生构造传递构造参数
    }
    CSon(const CSon &co):CFatherBru(co),CFatherSum(co),CFatherObam(co){}//传参，子父类的兼容

public:
    CFatherObam m_obamCopy;

private:
    CFatherSum m_sum;
    CFatherBru m_bru;
    CFatherObam m_obam;

};

//主函数
int main()
{
    CSon son(1,2,3,4);
    CSon OtherSon=son;
    getchar();
    return 0;

}

结果如下：

复制次序：按派生类的数据成员的复制构造函数，复制传值具备子父类的兼容性。

思考：

CSon(const CSon &co):CFatherBru(co),CFatherSum(co),CFatherObam(co){}//传参，子父类的兼容

向父类的非默认构造函数在复制时传递有效值