#include < iostream.>

using namespace std;

class Samp

{

public:

    void Set_i_j(int a, int b){i=a,j=b;}

    ~Samp()

    {

        cout <<"Destroying.." << i <<endl;

    }

    int GetMulti () { return i * j; }

protected:

int i;

int j;

};

int main ()

{

Samp * p;

p = new Samp[l0];

if(!p)

{

cout << "Allocation error \ n";

return;

}

for(int j =0; j<l0; j ++)

    p[j]. Set_i_j (j, j);

for(int k=0; k<l0; k++)

    cout <<"Multi[" <<k <<"] is:"<< p[k].GetMulti () <<endl;

delete [ ] p;

return 0;

}

#include < iostream>

using namespace std;

class Vector

{

public:

    Vector (int s = 100);

    int& Elem(int ndx);

    void Display();

    void Set ();

    ~Vector ();

protected:

int size;

int* buffer;

}

Vector::Vector (int s)

{

buffer = new int [size = s];

for(int i = O; i<size; i + + )

    buffer [i] = i* i;

}

int& Vector:: Elem(int ndx)

{

    if(ndx< 0 || ndx> = size)

    {

        cout << "error in index" <<endl;

        exit (1);

    }

    return buffer [ndx];

}

void Vector::Display ()

{

    for(int j =0; j< size; j ++)

    cout << buffer[j] <<endl;

}

void Vector:: Set ()

{

    for(int j =0; j<size; j++)

        buffer[j] = j + 1;

}

Vector:: ~ Vector()

{

    delete [] buffer;

}

int main()

{

    Vector a(10);

    Vector b(a);

    a. Set ();

    b. Display ();

return 0;

}

#include < iostream>

using namespace std;

class CAT

{

public:

    CAT();

    CAT(const CAT&);

    ~CAT();

    int GetAge() const (return * itsAge;)

    void SetAge(int age) { * itsAge = age; }

protected:

int * itsAge;

};

CAT::CAT ()

{

itsAge = new int;

*itsAge = 5;

}

CAT::~CAT ()

{

    delete itsAge;

    itsAge = 0;

}

void main()

{

    CAT frisky;

    cout << "frisky's age:" << frisky. GetAge() <<endl;

    cout <<"Setting frisky to 6... \ n";

    frisky. SetAge ( 6 );

    cout << "Creating boots from frisky \ n";

    CAT boots(frisky);

    cout <<"frisky's age:" << frisky. GetAge() <<endl;

    cout << "boots'age:" << boons. GetAge () <<endl;

    cout << "setting frisk,, to 7 .... n";

    frisky. SetAge (7);

    cout <<"frisky"s age:" << frisky. GetAge() <<endl;

    cout <<"boots' age:" << boots. GetAge() <<endl;

}