help to new C programmer with time.h

[pf at geech.ai.mit.edu]

jik at athena.mit.edu (Jonathan I. Kamens) wrote:
>   First of all, this is an OS-specific question, not a C question, because
>the C language does not define how to get the time; any functions for getting
>the time in C are OS-specific library functions, not standard C functions. 
>Since the functions and structures you are using appear to me to be Unix
>library structures and functions, I have cross-posted my response to

Sure about this?  struct tm, time_t, and localtime are in K&RII, p256.
They look like part of the standard library to me.  A nonstandard
approach would be assuming that time_t is a longword containing the
number of seconds since whenever.  But using time_t as an abstract
datatype seems allowed by K&R2 (which, I know, is not the ANSI spec).
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