Sleep function in Windows, using C

I need to sleep my program in Windows. What header file has the sleep function?

[MSDN][1]: Header: Winbase.h (include Windows.h)


[1]:

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`SleepEx` function (see

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) is the best choise if your program directly or indirectly creates windows (for example use some COM objects). In the simples cases you can also use `Sleep`.

Use:

#include <windows.h>

Sleep(sometime_in_millisecs); // Note uppercase S

And here's a small example that compiles with [MinGW][1] and does what it says on the tin:

#include <windows.h>
#include <stdio.h>

int main() {
printf( "starting to sleep...\n" );
Sleep(3000); // Sleep three seconds
printf("sleep ended\n");
}

[1]:

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Include the following function at the start of your code, whenever you want to busy wait. This is distinct from sleep, because the process will be utilizing 100% cpu while this function is running.

void sleep(unsigned int mseconds)
{
clock_t goal = mseconds + clock();
while (goal > clock())
;
}

Note that the name `sleep` for this function is misleading, since the CPU will not be sleeping at all.