C code - 9 lines

Link:

C, pasted on Jun 5:

int non_smaller_int_divisible_by_16(int x)
{
  return x + ((16 - (x % 16)) % 16);
}

int main()
{
  return non_smaller_int_divisible_by_16(17);
}

Output:

1	Exited: ExitFailure 32