#include <iostream>
#include <stdlib.h>
using namespace std;

void fill_array(int* arr, int size);
void show_array(int* arr, const int size);

const int plus_size = 5;

int main()
{
    int size = 1;
    const int new_size = 1;

    int *arr = new int[size];

    int k = 0;
    int enter_value = 0;

    cout << "Enter number 1-5: " << endl;
    for (int a = 0; a < size; a++)
    {
        cout << "[" << a << "]: ";
        cin >> enter_value;

        if (enter_value == 0)
        {
            break;
        }

        arr[a] = enter_value;

        if (a == size - 1)
        {
            size += new_size;

            int *arr2 = new int[size];
            for (int a = 0; a < size; a++)
            {
                arr2[a] = arr[a];
            }

            show_array(arr2, size - new_size);
            delete[] arr;

            arr = arr2;
        }
    }

    show_array(arr, size - new_size);

    system("pause");
    return 0;
}

void fill_array(int* const arr, const int size)
{
    for (int i = 0; i < size; i++)
    {
        arr[i] = rand() % 10;
    }
}

void show_array(int* const arr, const int size)
{
    for (int i = 0; i < size; i++)
    {
        cout << arr[i] << " ";
    }

    cout << endl;
}