#include <iostream>
#include <cassert>

using namespace std;

/****************************************************************/

class Vec {
        public:
       int get(int index);
       int insert(int number);
       int len();
       Vec(int size, int incr);
       ~Vec();
        private:
       int size;
       int last;
       int incr;
       int *data;
       void resize(int inc);
};

/****************************************************************/

Vec :: Vec (int siz = 64, int inc = 64)
{
       data = new int[siz];
       size = siz;
       incr = inc; // Число, на которое увеличивается размер массива
       last = 0;
}

/****************************************************************/

Vec :: ~Vec ( )
{
       cout << "Final size: " << size << endl;
       delete [] data;
}

/****************************************************************/

int Vec :: get (int index)
{
       assert(index >= 0 && index < last);
       return data[index];
}

/****************************************************************/

int Vec :: insert (int number)
{
       if (last >= size)
        resize(incr);
       data[last++] = number;
}

/****************************************************************/

int Vec :: len ( )
{
       return last;
}

/****************************************************************/

void Vec :: resize (int inc)
{
       int newsize = size + inc;
       int *newdata = new int[newsize];

       for (int i = 0; i < last; i++)
       {
        newdata[i] = data[i];
       }

       delete [] data;

       size = newsize;
       data = newdata;
}

/****************************************************************/

int main ( )
{
       Vec vec(4, 4); // Числа произвольные

       for (int i = 0; i < 16; i++)
       {
        vec.insert(i);
        cout << vec.get(i) << " ";
       }

       cout << endl;
}