Date: Tue, 21 Jun 1994 01:44:27 -0400
From: meetze AT charlie DOT ece DOT scarolina DOT edu (Murle C. Meetze III)
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: gmtime, ctime and localtime functinons
Cc: meetze AT charlie DOT ece DOT scarolina DOT edu

I wrote the following program to test the gmtime, ctime and localtime 
functions:
 
#include  <time.h>
#include  <stdio.h>
 
void main(void) {
 
time_t a;
struct tm *b, *c;
 
time(&a);
printf("ctime function returns:\n%s\n",ctime(&a));
b = gmtime(&a);
c = localtime(&a);
printf("gmttime function returns:\n%s\n",asctime(b));
printf("localtime function returns:\n%s\n",asctime(c));
}
 
And here is the output I got on my PC:
ctime function returns:
Mon Jun 20 11:04:25 1994
 
gmttime function returns:
Mon Jun 20 16:04:25 1994
 
localtime function returns:
Mon Jun 20 11:04:25 1994
 
And the same program run on a Unix system output:
ctime function returns:
Mon Jun 20 11:52:13 1994
 
gmttime function returns:
Mon Jun 20 11:52:13 1994
 
localtime function returns:
Mon Jun 20 11:52:13 1994
 
Both were run close to the same time.  The correct time here 
now is Mon Jun 20 11:52 1994.  My clocks are set 15 mins. 
ahead of time, so the actual difference is about 1 hour 
slower.  But when I run time on my PC I get the correct time.  
Is there a bug in the ctime and localtime functions?
 
                                MCMIII
                                Murle Cleveland Meetze III
                                meetze AT charlie DOT ece DOT scarolina DOT edu