c++day5

class Sofa
{
protected:
    string sit;
public:
    Sofa()
    {
        cout << "沙发无参构造" << endl;
    }
    Sofa(string s):sit(s)
    {
        cout << "沙发有参构造" << endl;
    }
    Sofa(const Sofa &other):sit(other.sit)
    {
        cout << "沙发拷贝构造" << endl;
    }
    Sofa &operator=(const Sofa &other)
    {
        cout << "沙发拷贝赋值" << endl;
        if(this!= &other)
        {
            sit = other.sit;
        }
        return *this;
    }
    void show()
    {
        cout << "sit=" << sit <
    }
};
 
class Bed
{
protected:
    string sleep;
public:
    Bed()
    {
        cout << "床无参构造" << endl;
    }
    Bed(string s):sleep(s)
    {
        cout << "床有参构造" << endl;
    }
    Bed(const Bed &other):sleep(other.sleep)
    {
        cout << "床拷贝构造" << endl;
    }
    Bed &operator=(const Bed &other)
    {
        cout << "床拷贝赋值" << endl;
        if(this!= &other)
        {
            sleep = other.sleep;
        }
        return *this;
    }
    void show()
    {
        cout << "sleep=" << sleep <
    }
};
 
class Sofa_bed:public Sofa,protected Bed
{
private:
    string down;
public:
    Sofa_bed()
    {
        cout << "床和沙发的无参构造" << endl;
    }
    Sofa_bed(string a,string b,string c):Sofa(a),Bed(b),down(c)
    {
        cout << "床和沙发的有参构造" << endl;
    }
    Sofa_bed(const Sofa_bed &other):Sofa(other),Bed(other),down(other.down)
    {
        cout << "床和沙发的拷贝构造" << endl;
    }
    Sofa_bed &operator=(const Sofa_bed &other)
    {
        cout << "床和沙发的拷贝赋值" << endl;
        if(this!= &other)
        {
            down = other.down;
            Sofa::operator = (other);
            Bed::operator = (other);
        }
        return *this;
    }
    void show()
    {
        cout << "多继承子类" << endl;
        cout << "down=" << down << endl;
        cout << "sit=" << sit << endl;
        cout << "sleep=" << sleep << endl;
  
    }
};