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time in microseconds


 
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# 1  
Old 09-02-2001
Question time in microseconds

Hi

I want to print the current local time in microseconds

How ?
# 2  
Old 09-04-2001
Code:
struct timeval tv;
struct timezone tz;
struct tm *tm;
gettimeofday(&tv, &tz);
tm=localtime(&tv.tv_sec);
printf(" %d:%02d:%02d %d \n", tm->tm_hour, tm->tm_min,
    tm->tm_sec, tv.tv_usec);

# 3  
Old 09-04-2001
Thank you

Thank you very much
# 4  
Old 07-29-2002
just a little more help for the C noob like myself.

i get these errors when i try to compile it. I must admit i do not know C.


OS=sol8
platform=E3500 (sparc)

Code:
$ cat milli.c

#include <stdlib.h>
#include <sys/time.h>

struct timeval tv;
struct timezone tz;
struct tm *tm;
gettimeofday(&tv, &tz);
tm=localtime(&tv.tv_sec);
printf(" %d:%02d:%02d %d \n", tm->tm_hour, tm->tm_min
,m->tm_sec, tv.tv_usec);


$ gcc milli.c
milli.c:7: parse error before '&' token
milli.c:7: warning: data definition has no type or storage class
milli.c:8: conflicting types for `tm'
milli.c:6: previous declaration of `tm'
milli.c:8: warning: initialization makes integer from pointer without a cast
milli.c:8: initializer element is not constant
milli.c:8: warning: data definition has no type or storage class
milli.c:9: parse error before string constant
milli.c:10: warning: conflicting types for built-in function `printf'
milli.c:10: warning: data definition has no type or storage class

# 5  
Old 07-29-2002
Try this...
Code:
#include <stdlib.h>
#include <sys/time.h>
main()
{
     struct timeval tv;
     struct timezone tz;
     struct tm *tm;
     gettimeofday(&tv, &tz);
     tm=localtime(&tv.tv_sec);
     printf(" %d:%02d:%02d %d \n", tm->tm_hour, tm->tm_min,
              m->tm_sec, tv.tv_usec);
     exit(0);
}

This User Gave Thanks to Perderabo For This Post:
# 6  
Old 07-29-2002
and once again you prove im not worthy!!

now 1 last question.

$ ./a.out
17:30:40 806214

$ date
Mon Jul 29 17:30:43 GMT 2002

what is the 806214???


# 7  
Old 07-29-2002
That's the microseconds! Smilie In your example the gettimeofday system call occurred 806,214 microseconds after 17:30:40.

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