Which of the following statement is correct about the program given below?

#include<iostream.h> 
class CuriousTab
{
    int x, y; 
    public:
        CuriousTab()
        {
            x = 0;
            y = 0; 
        }
        CuriousTab(int xx, int yy)
        {
            x = xx;
            y = yy; 
        }
        CuriousTab(CuriousTab *objB)
        {
            x = objB->x;
            y = objB->y; 
        }
        void Display()
        {
            cout<< x << " " << y;
        }
};
int main()
{
    CuriousTab objCuriousTab( new CuriousTab(20, 40) );
    objCuriousTab.Display();
    return 0; 
}

#include<iostream.h>
class CuriousTabBase
{   
    public:
    CuriousTabBase()
    {
        cout<< "Base OK. "; 
    }
    virtual ~CuriousTabBase()
    {
        cout<< "Base DEL. "; 
    }
};
class CuriousTabDerived: public CuriousTabBase
{
    public:
    CuriousTabDerived()
    { 
        cout<< "Derived OK. "; 
    }
    ~CuriousTabDerived()
    { 
        cout<< "Derived DEL. "; 
    }
};
int main()
{
    CuriousTabBase *basePtr = new CuriousTabDerived();
    delete basePtr;
    return 0;
}

#include<iostream.h> 
class CuriousTab
{
    int x, y; 
    public:
    CuriousTab(int xx)
    {
        x = ++xx;
    } 
    ~CuriousTab()
    {
        cout<< x - 1 << " ";
    }
    void Display()
    {
        cout<< --x + 1 << " ";
    } 
};
int main()
{
    CuriousTab objCuriousTab(5);
    objCuriousTab.Display();
    int *p = (int*) &objCuriousTab;
    *p = 40;
    objCuriousTab.Display();
    return 0; 
}

#include<iostream.h> 
class CuriousTab
{
    int x; 
    public:
        CuriousTab()
        {
           x = 0;
        }
        CuriousTab(int xx)
        {
            x = xx; 
        }
        CuriousTab(CuriousTab &objB)
        {
            x = objB.x; 
        }
        void Display()
        {
            cout<< x << " ";
        }
};
int main()
{
    CuriousTab objA(25);
    CuriousTab objB(objA);
    CuriousTab objC = objA;
    objA.Display();
    objB.Display();
    objC.Display();
    return 0; 
}

#include<iostream.h> 
class CuriousTabBase
{
    public:
    int x, y; 
    public:
    CuriousTabBase(int xx = 0, int yy = 0)
    {
        x = xx;
        y = yy; 
    } 
 };
class CuriousTabDerived : public CuriousTabBase
{
    private:
        CuriousTabBase objBase; 
    public:
    CuriousTabDerived(int xx, int yy) : CuriousTabBase(xx), objBase(yy)
    {
        cout << x          << " " 
             << this->x    << " "  
             << CuriousTabBase::x << " "     
             << this->objBase.x ;
    } 
    ~CuriousTabDerived()
    { }
};
int main()
{
    CuriousTabDerived objDev(11, 22); 
    return 0;
}

#include<iostream.h> 
class CuriousTab
{
    int x; 
    public:
    CuriousTab(short ss)
    {
        cout<< "Short" << endl;
    }
    CuriousTab(int xx)
    {
        cout<< "Int" << endl;
    }
    CuriousTab(float ff)
    {
        cout<< "Float" << endl;
    }
    ~CuriousTab() 
    {
        cout<< "Final";
    }
};
int main()
{
    CuriousTab *ptr = new CuriousTab('B');
    return 0; 
}

#include<iostream.h> 
class CuriousTabBase
{
    protected:
    int x, y; 
    public:
    CuriousTabBase(int xx = 0, int yy = 0)
    {
        x = xx;
        y = yy; 
    } 
    void Show()
    {
        cout<< x * this->y << endl;
    }
};
class CuriousTabDerived
{
    private:
        CuriousTabBase objBase; 
    public:
    CuriousTabDerived(int xx, int yy) : objBase(xx, yy)
    {
        objBase.Show();
    } 
    ~CuriousTabDerived()
    { }
};
int main()
{
    CuriousTabDerived objDev(10, 20); 
    return 0;
}

#include<iostream.h> 
class CuriousTab
{
    int x, y; 
    public:
    CuriousTab(int xx = 10, int yy = 20 )
    {
        x = xx; 
        y = yy;
    }
    void Display()
    {
        cout<< x << " " << y << endl;
    } 
    ~CuriousTab()
    { } 
};
int main()
{
    CuriousTab objCuriousTab; 
    objCuriousTab.Display(); 
    return 0;
}

#include<iostream.h> 
class CuriousTab
{
    int x, y; 
    public:
    CuriousTab(int xx = 10, int yy = 20 )
    {
        x = xx; 
        y = yy;
    }
    void Display()
    {
        cout<< x << " " << y << endl;
    } 
    ~CuriousTab()
    { } 
};
int main()
{
    CuriousTab objCuriousTab; 
    objCuriousTab.Display(); 
    return 0;
}

#include<iostream.h> 
static int Result;
class India
{
    public:
    void Change(int x = 10, int y = 20, int z = 30)
    {
        cout<< x + y + z;
    }
    void Display(int x = 40, float y = 50.00)
    {
        Result = x % x; 
        cout<< Result;
    }
};
class CuriousTab
{
    int x, y; 
    public:
    void Change(int x, int y = 50)
    {
        cout<< x + y;
    }
};
class CuriousTab: public India, public CuriousTab
{
    public:
    void Display(int x = 10, int xx = 100, int xxx = 1000)
    {
        Result = x + xx % x * x;
        cout<< Result ; 
    }
};
int main()
{
    CuriousTab objCuriousTab;
    objCuriousTab.India::Display(10, 20.00);
    return 0; 
}

#include<iostream.h> 
class CuriousTabSample
{
    public:
        int   a; 
        float b;
        void CuriousTabFunction(int a, float b, float c = 100.0f)
        {
            cout<< a % 20 + c * --b;
        } 
}; 
int main()
{   CuriousTabSample objCuriousTab;
    objCuriousTab.CuriousTabFunction(20, 2.000000f, 5.0f);
    return 0; 
}