[Mingw-users] warning: unknown conversion type character 'k' in format

[Valerio M. <ef...@io...>]

compiling:

#include <time.h>
strftime (buf, sizeof (buf), "%k.%M", &tm);

I got the error:

warning: unknown conversion type character 'k' in format


Olson's timezone package define:
%k     The  hour  (24-hour  clock) as a decimal number (range 0 to 23);
       single digits are preceded by a blank.  (See also %H.)  (TZ)


The error depends on 'msvcrt' that do not support %k or from something
other?

thank you,
Valerio