如何处理很长的位序列？

{-1, 3, 2, 5}

int i, A[] = {-1, 3, 2, 5};

for (i = 1; i < (1 << sizeof(A)); i++)
{
  int t = i, p = 0;

  while (t > 0)
  {
    if (t % 2 > 0)
      printf(\"%d\\t\", a[p]);

    t /= 2, p++;
  }

  printf(\"\\n\");
}