FW: asctime.c

[Clive D.W. Feather]

Olson, Arthur David (NIH/NCI) said:
> for a 2 character field, it probably doesn't matter, except possibly for the
> value 0 (where a system that likes %.2d might produce just " 0" if given
> %02d - the "0" in the format (SysIII variant) requires a leading 0 in the
> result, or something like that, so for 1, you should get 01, but for 0 ...)

"%02d" means "minimum 2 characters, fill with zeroes"
"%.2d" means "minimum 2 digits, no fill"; "%0.2d", "%02.2d", and "%2.2d"
  all mean the same.

For values in the range 0 to 9, both generate "00" to "09".
For values like -4, the former generates "-4" and the latter "-04".

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