//*(&x + 8) = the value of x from the previous iteration
void f(int x)
{
    if (x > 0)
    {
        x = -x;
        printf("1\n");
        f(-2);
    }
    else
    {
        if (*(&x + 8) <= x)
        {
            printf("%i\n", -x);
            if (*(&x + 8) != x)
                f(*(&x + 8));
        }
        else
        {
            printf("%i\n", -(*(&x + 8) - 1));
            if (x != *(&x + 8) - 1)
                f(*(&x + 8) - 2);
        }
    }
}