.. efun:: string ctime(int clock)
  string ctime(int *uclock)

  Interpret the argument clock as number of seconds since Jan, 1st, 1970, 0.00 and convert it to a nice date and time string. If clock is not specified, ``time()`` is used as default.

  The second form is like the first, except that it takes as argument an array of ints as it is returned from :efun:`utime`: int[0] is the number of seconds like before, int[1] is the number of microseconds within that second.

  .. usage::

    The below will print out something like "Fri Jul 17 19:13:33 1992"::

      write(ctime()+"\n");

  :history 3.2.9 changed: adds the second form.

  .. seealso:: :efun:`gmtime`, :efun:`localtime`, :efun:`mktime`, :efun:`strftime`, :efun:`time`, :efun:`utime`