[Dev-C++] sleep() in unistd.h ??

[<we...@ha...>]

Hi,

I use always sleep() in linux. I tried it with Dev-C++ and it geve a
error... in a sample example like this:

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

int main(){

    sleep(15);

return(0);
}

In what header is sleep() ??

If it didn't exist what funcion can i use that do the something ?? What
header i need ??

Thkz a lot.

Best Regards.

[ ]'s