golden hour

/opt/alt/libicu65/usr/share/doc/alt-libicu65-devel-65.1/samples/datecal

File/Folder	Size	Actions
Makefile	655 B
cal.cpp	1.88 KB
ccal.c	1.98 KB

Edit: ccal.c

/*
*******************************************************************************
*
*   © 2016 and later: Unicode, Inc. and others.
*   License & terms of use: http://www.unicode.org/copyright.html#License
*
*******************************************************************************
*******************************************************************************
*
*   Copyright (C) 2002-2003, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*/

#include "unicode/ucal.h"
#include <stdio.h>

void c_main()
{
  puts("----");
  puts("C Sample");

UErrorCode status = U_ZERO_ERROR;
int32_t i;
UCalendar *cal = ucal_open(NULL, -1, NULL, UCAL_GREGORIAN, &status);
if (U_FAILURE(status)) {
      puts("Couldn't create GregorianCalendar");
      return;
      }
      /* set up the date */
      ucal_set(cal, UCAL_YEAR, 2000);
      ucal_set(cal, UCAL_MONTH, UCAL_FEBRUARY);   /* FEBRUARY */
      ucal_set(cal, UCAL_DATE, 26);
      ucal_set(cal, UCAL_HOUR_OF_DAY, 23);
      ucal_set(cal, UCAL_MINUTE, 0);
      ucal_set(cal, UCAL_SECOND, 0);
      ucal_set(cal, UCAL_MILLISECOND, 0);
      /* Iterate through the days and print it out. */
      for (i = 0; i < 30; i++) {
          /* print out the date. */
          /* You should use the udat_* API to properly format it */
          printf("year: %d, month: %d (%d in the implementation), day: %d\n",
              ucal_get(cal, UCAL_YEAR, &status),
              ucal_get(cal, UCAL_MONTH, &status) + 1,
              ucal_get(cal, UCAL_MONTH, &status),
              ucal_get(cal, UCAL_DATE, &status));
          if (U_FAILURE(status)) {
          puts("Calendar::get failed");
          return;
          }
          /* Add a day to the date */
          ucal_add(cal, UCAL_DATE, 1, &status);
          if (U_FAILURE(status))
          {
              puts("Calendar::add failed");
              return;
          }
      }
      ucal_close(cal);  
}