need "yy-ddd-hh:mm:ss ==> (time_t) clock" converter

[Lars Wirzenius]

In article <ENAG.91Feb26020137 at holmenkollen.ifi.uio.no>, enag at ifi.uio.no (Erik Naggum) writes:
[ A Unix shell script and a GNU Emacs lisp-routine that generate a table
with cumulative counts from the beginning of the year deleted ]

Ok, suppose you want to have the cumulative counts, but don't run either
Unix nor GNU Emacs? You use the compiler:

int cumulative_yday[] = {
	0,			/* days before Jan 1st */
	0+31,			/* Feb 1st */
	0+31+28,		/* March 1st */
	0+31+28+31,		/* April 1st */
	...
};

Or is there anything I miss?
-- 
Lars Wirzenius    wirzenius at cc.helsinki.fi