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/* Copyright (C) 1991-2024 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
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int
main (int argc, char **argv)
{
time_t t;
struct tm *tp;
struct tm tbuf;
int lose = 0;
--argc;
++argv;
do
{
char buf[BUFSIZ];
if (argc > 0)
{
static char buf[BUFSIZ];
sprintf(buf, "TZ=%s", *argv);
if (putenv(buf))
{
puts("putenv failed.");
lose = 1;
}
else
puts (buf);
}
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);
}
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