Setting Time in C

[Jimmy]

Hello,

Can anyone tell me how to set the time using C code? After browsing through
MSDN, I only find the C command to get time and not set time. Can anyone
advise me on this??

 

[Pushkar Pradhan]

I believe you want to set system time, right?
There is settimeofday() similar to gettimeofday().
But it says you have to be the system administrator to do that, else it
will fail.

 

[Jimmy]

Thanks for the information. ^_^

 

[Mike Wahler]

I believe you want to set system time, right?
There is settimeofday() similar to gettimeofday().

C has no such functions.

But it says you have to be the system administrator to do that, else it
will fail.

C has no concept of 'system administrator'.

Please keep platform-specific issues out of this
ISO standard C language group.

-Mike

 

[Mike Wahler]

Hello,

Can anyone tell me how to set the time using C code?

There is no way. C does not require the host platform
to have a clock at all.

After browsing through
MSDN,

MSDN does not define or document the C language, but
Microsoft products.

I only find the C command

C has no commands.

to get time and not set time. Can anyone
advise me on this??

The C standard library provides a function called
'time()' which can retrieve a system clock's time
*if* such a system clock exists. There is no
C function which can alter the state of a system's
clock.

You'll need platform-specific tools. You mention MSDN.
If you're wanting to do this on a Windows system, then
yes, there are indeed Microsoft functions for accessing
and modifying the state of the system clock.

But platform specific issues are not topical here.
The answer is indeed there at the MSDN site, all
you have to do is look. It's also described in the
documentation of the Windows API, provided with
virtually all Windows compilers.

-Mike

 

[Jimmy]

Thanks

--
Regards

Jimmy Lim

There is no way. C does not require the host platform
to have a clock at all.



MSDN does not define or document the C language, but
Microsoft products.


C has no commands.


The C standard library provides a function called
'time()' which can retrieve a system clock's time
*if* such a system clock exists. There is no
C function which can alter the state of a system's
clock.

You'll need platform-specific tools. You mention MSDN.
If you're wanting to do this on a Windows system, then
yes, there are indeed Microsoft functions for accessing
and modifying the state of the system clock.

But platform specific issues are not topical here.
The answer is indeed there at the MSDN site, all
you have to do is look. It's also described in the
documentation of the Windows API, provided with
virtually all Windows compilers.

-Mike

 

[Dan Pop]

Can anyone tell me how to set the time using C code? After browsing through
MSDN, I only find the C command to get time and not set time. Can anyone
advise me on this??

The C language has no facility for doing this. Your OS's API probably
provides a way of doing it. Your reference to MSDN suggests that
comp.os.ms-windows.programmer.win32 is the right newsgroup for asking.

Dan