How to use Sleep function?

EDIT *Just worked out how to do this (include windows.h, sleep(tired*1), tired measured in miliseconds)* Feel free to close thread.


I've been searching around on google on how to use this. I know i have to #include <unistd.h>, and my source code:

Code:

#include <unistd.h>
#include <stdio.h>

int main(void)
{
    
    printf("I'll be back in 10 seconds...\n\n");
    sleep(10);
    printf("I'm back!");
    getchar();
    
    return(0);
}

The output just prints:

Code:

I'll be back in 10 seconds...

I'm back!

With no interval in between.

Am I using this incorrectly?

Thanks

If you are using Windows, Sleep takes time in milliseconds.
If you are using Linux, sleep takes time in seconds.
Also note the case, because C is case sensitive!
For Windows, Sleep is defined in Windows.h.