#include <iostream>

using namespace std;

void reverse_1d_array(int* arr_begin, int* arr_end)
{
    if (arr_begin != nullptr && arr_end != nullptr)
    {
        int* firstPointer = arr_begin;
        int* secondPointer = arr_end;
        int arrSize = arr_end - arr_begin + 1;
        for (int i = 0; i < arrSize / 2; i++)
        {
            int* temp = firstPointer;
            firstPointer = secondPointer;
            secondPointer = temp;
            firstPointer--;
            secondPointer++;
        }
    }
}

int main()
{
    int arr[] = { 1, 3, 5, 7 };
    int arrSize = sizeof(arr) / sizeof(arr[0]);
    reverse_1d_array(&arr[0], &arr[arrSize - 1]);
    cout << arr[0] << " " << arr[1] << " " << arr[2] << " " << arr[3];
}