[Inheritance] Multiple inheritance

Description

写作和赛车是韩少的两大最爱，但在生活的不同时期还是要有所取舍。

韩少的原则是：

周末：写作优先； 周内：赛车优先；

这些可以提现在Weekend和Workday的对象构造中，类继承关系如下：

Racing            Writing

    \                       /

  Weekend/Workday

 

其中Racing和Writing如下：

class Writing
{
public:
 Writing(){cout<<"Writing constructor"<<endl;}
 ~Writing(){cout<<"~Writing"<<endl;}
};

class Racing
{
public:
 Racing(){cout<<"Racing constructor"<<endl;}
 ~Racing(){cout<<"~Racing"<<endl;}
};

主函数如下：

int main()
{
 {
 Weekend end;
 Workday day;
}
}

如何使得输出为：

Writing constructor
Racing constructor
Weekend constructor
Racing constructor
Writing constructor
Workday constructor
~Workday
~Writing
~Racing
~Weekend
~Racing
~Writing

Input

none

Output

Writing constructor
Racing constructor
Weekend constructor
Racing constructor
Writing constructor
Workday constructor
~Workday
~Writing
~Racing
~Weekend
~Racing
~Writing
 

Sample_Input

Sample_Ouput

Writing constructor
Racing constructor
Weekend constructor
Racing constructor
Writing constructor
Workday constructor
~Workday
~Writing
~Racing
~Weekend
~Racing
~Writing

Hint

提交main函数之外的所有类

framework.cpp

#include "source.h"
int main()
{
 {
 Weekend end;
 Workday day;
    }
}

source.h

#ifndef SOURCE_H
#define SOURCE_H
#include<iostream>

using namespace std;

class Writing
{
public:
    Writing()
    {
        cout<<"Writing constructor"<<endl;
    }
    ~Writing()
    {
        cout<<"~Writing"<<endl;
    }
};

class Racing
{
public:
    Racing(){cout<<"Racing constructor"<<endl;}
    ~Racing(){cout<<"~Racing"<<endl;}
};
class Weekend:public Writing,public Racing
{
public:
    Weekend()
    {
        cout << "Weekend constructor" << endl;
    }
    ~Weekend()
    {
        cout << "~Weekend" << endl;
    }
};
class Workday:public Racing,public Writing
{
public:
    Workday()
    {
        cout << "Workday constructor" << endl;
    }
    ~Workday()
    {
        cout << "~Workday" << endl;
    }
};

#endif // SOURCE_H