l5_v4

#include "stdafx.h"
#include <iostream>
#include <conio.h>

using namespace std;

class X
{
protected:
    int *x1, *x2;
public:
    X(int, int);
    ~X();
    virtual void set(int, int);
    virtual void print();
};

X::X(int i, int j)
{
    x1 = new int(i);
    x2 = new int(j);
}

X::~X()
{
    delete x1;
    delete x2;
}

void X::set(int i, int j)
{
    *x1 = i;
    *x2 = j;
};

void X::print()
{
    cout<<"X1= "<<*x1<<endl<<"X2= "<<*x2<<endl;
};

class Y : public X
{
private:
    int *y;
public:
    Y(int, int, int);
    ~Y();
    void set(int, int, int);
    void print();
};

Y::Y(int i, int j, int k):X(i, j)
{
    y = new int(k);
}

Y::~Y()
{
    delete y;
}

void Y::set(int i, int j, int k)
{
    *x1 = i;
    *x2 = j;
    *y = k;
}

void Y::print()
{
    cout<<"X1= "<<*x1<<endl<<"X2= "<<*x2<<endl<<"Y= "<<*y<<endl<<"Result= "<<*x1+*x2-*y<<endl;
}

void main()
{
    Y obj1(1, 3, 5);
    Y obj2(2, 4, 6);
    X *p;
    p=&obj1;
    p->print();
    p=&obj2;
    p->print();
    obj2.set(7,8,9);
    p->print();

    Y obj(10, 5, 11);
    obj.print();
    obj.set(3,3,3);
    obj.print();

    _getch();
}