ctime/time.h

Hi, I'm new to C++, but am writing my current project in C++ using VS2005. I want to use the POSIX clock_gettime function, like this:

#include "time.h"

void foo(void){

timespec curr_time;

clock_gettime(CLOCK_REALTIME, &curr_time);

}

This fails, not recognizing timespec, or clock_gettime, or CLOCK_REALTIME, even though the same code will compile fine using another development tool/compiler.

As an alternative I tried:

#include "time.h"

void foo(void){

time_t = time(NULL);

}

but this produced a linker error. How is it possible that gettin the current time is this hard If someone can help me I would really appreciate it. The POSIX option is my top choice and the time_t = time(NULL) option is my second choice, but I can't use any functions that are Microsoft-specific.

Thanks in advance!

Visual C++5

Visual C++ doesn't support this POSIX function: or at least it doesn't appear in any of the header files on my machine.

This fragment of a console application is made in VS 2005:

#include "stdafx.h"

#include <time.h>

int _tmain(int argc, _TCHAR* argv[])

{

time_t t = time(NULL);

tm s;

gmtime_s(&s, &t);

printf("UTC Time: %02i:%02i:%02i\n",

s.tm_hour, s.tm_min, s.tm_sec);

localtime_s(&s, &t);

printf("Local Time: %02i:%02i:%02i\n",

s.tm_hour, s.tm_min, s.tm_sec);

return 0;

}

It is working with no problem.

In case of MFC applications, you can use CTime class.

In case of Windows API, you can use GetSystemTime function.< xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

What kind of linker error do you receive

The error I get is "LNK2019: unresolved external symbol time referenced in function..."

So the odd thing here is that at compile time the function is accepted as part of time.h, but at link time I think maybe the project can't find the ctime library. How can I fix this If I need to add the reference to the library, how would I go about doing that

Thanks for your response!!!

- Rachel