Correctly pad negative integers with zeros with std::cout

Question

I found this question already asked, but the answer everybody gives is

std::cout << std::setw(5) << std::setfill(\'0\') << value << std::         


        

Answer 1

std::cout << std::setw(5) << std::setfill('0') << std::internal << -5 << '\n';
//                                                     ^^^^^^^^

Output:

-0005

std::internal

Edit:

For those those that care about such things, N3337 (~c++11), 22.4.2.2.2:

The location of any padding is determined according to Table 91.
                  Table 91 - Fill padding
State                               Location
adjustfield == ios_base::left       pad after
adjustfield == ios_base::right      pad before
adjustfield == internal and a
sign occurs in the representation   pad after the sign
adjustfield == internal and
representation after stage 1 began
with 0x or 0X                       pad after x or X
otherwise                           pad before