/* Copyright (C) 1991, 1992, 1994, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <stdlib.h> #include <time.h> int main (int argc, char **argv) { time_t t; register struct tm *tp; struct tm tbuf; int lose = 0; --argc; ++argv; do { char buf[BUFSIZ]; if (argc > 0) { static char tzenvbuf[BUFSIZ]; sprintf(tzenvbuf, "TZ=%s", *argv); if (putenv(tzenvbuf)) { puts("putenv failed."); lose = 1; } else puts (tzenvbuf); } tzset(); tbuf.tm_year = 72; tbuf.tm_mon = 0; tbuf.tm_mday = 31; tbuf.tm_hour = 6; tbuf.tm_min = 14; tbuf.tm_sec = 50; tbuf.tm_isdst = -1; doit:; t = mktime(&tbuf); if (t == (time_t) -1) { puts("mktime() failed?"); lose = 1; } tp = localtime(&t); if (tp == NULL) { puts("localtime() failed."); lose = 1; } else if (strftime(buf, sizeof(buf), "%a %b %d %X %Z %Y", tp) == 0) { puts("strftime() failed."); lose = 1; } else puts(buf); if (tbuf.tm_year == 101) { tbuf.tm_year = 97; tbuf.tm_mon = 0; goto doit; } ++argv; } while (--argc > 0); { #define SIZE 256 char buffer[SIZE]; time_t curtime; struct tm *loctime; curtime = time (NULL); loctime = localtime (&curtime); fputs (asctime (loctime), stdout); strftime (buffer, SIZE, "Today is %A, %B %d.\n", loctime); fputs (buffer, stdout); strftime (buffer, SIZE, "The time is %I:%M %p.\n", loctime); fputs (buffer, stdout); loctime->tm_year = 72; loctime->tm_mon = 8; loctime->tm_mday = 12; loctime->tm_hour = 20; loctime->tm_min = 49; loctime->tm_sec = 05; curtime = mktime (loctime); strftime (buffer, SIZE, "%D %T was %w the %jth.\n", loctime); fputs (buffer, stdout); } return (lose ? EXIT_FAILURE : EXIT_SUCCESS); }