// a.c//// Copyright 2011 German Gutierrez <german@debian>//// This program is free software; you can redistribute it and/or modify// it under the terms of the GNU General Public License as published by// the Free Software Foundation; either version 2 of the License, or// (at your option) any later version.//// This program is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the// GNU General Public License for more details.//// You should have received a copy of the GNU General Public License// along with this program; if not, write to the Free Software// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,// MA 02110-1301, USA.#include <stdio.h>#include <stdlib.h>#include <time.h>int julianDayGuess(int, int);int main(void){ int dd; int mm; time_t ahora; struct tm *ptr_ts; time(&ahora); ptr_ts = gmtime ( &ahora ); dd = ptr_ts->tm_mday; /*recuperamos el dia del mes*/ mm = ptr_ts->tm_mon; /* van de 0 a 11 */ mm +=1; /* agregamos el offset*/ printf("%d ", julianDayGuess(mm,dd)); return EXIT_SUCCESS;}int julianDayGuess(mm, dd){ int result; /*Si mm == 2 (febrero), incrementar el valor de día en 1.*/ dd+=(mm==2)? 1:0; result = (int) (30.42*(mm-1))+dd; return result;}