void printArray(int* arr1, int size)
{
	for (int i = 0; i <= size - 1; i++)
		std::cout << arr1[i] << ' '; 
	std::cout << std::endl;
}


void push_backref(int * &arr1, int& size, const int value)
{
	int* newArray = new int[size + 1];
	newArray[size] = value;
	for (int i = 0; i < size; i++)
	  newArray[i] = arr1[i];
	size++;
	delete[]arr1;
		arr1 = newArray;
}


void push_backptr(int *arr1, int& size, const int value)
{
	int* newArray = new int[size + 1];
	newArray[size] = value;
	for (int i = 0; i < size; i++)
		newArray[i] = arr1[i];
	size++;
	delete[]arr1;
	arr1 = newArray;
}


void fillArray(int* arr1, int const size)
{
	for (int i = 0; i <= size - 1; i++)
		arr1[i] = rand();
}


int main()
{
	int SIZE = 5;
	int* arr = new int[SIZE];

	fillArray(arr, SIZE); //заполняем массив лишь бы был не мусор
	printArray(arr, SIZE); //печать массива на экран
	//push_backref(arr, SIZE, 1000);
	push_backpntr(arr, SIZE, 1000);
	printArray(arr, SIZE);
	
}

delete[]arr1;

void push_backpntr(int **arr1, int& size, const int value)
{
	int* newArray = new int[size + 1];
	newArray[size] = value;
	for (int i = 0; i < size-1; i++)
		newArray[i] = *arr1[i];
	size++;
	delete[]*arr1;
	*arr1 = newArray;
}

int main()
{
	int SIZE = 5;
	int* arr;
	arr  = new int[SIZE];


	fillArray(arr, SIZE);
	printArray(arr, SIZE);
	push_backpntr(&arr, SIZE, 1000); 
	//push_backref(arr, SIZE, 1000);
	printArray(arr, SIZE);
	
}