#include <stdio.h>
       #include <sys/time.h>
       #include <sys/types.h>
       #include <unistd.h>

       int
       main(void)
       {
             fd_set wfds;
			 FILE*	FPR;
			 int 	wfd;
             struct timeval tv;
             int 	retval;

			 FPR = fopen("test.txt", "a");
			 wfd = fileno(FPR);
			 
			 /* Watch stdin (wfd) to see when it is writable. */
		      FD_ZERO(&wfds);
		      FD_SET(wfd, &wfds);

		     /* Wait up to fifteen seconds. */
		     tv.tv_sec = 15;
			 tv.tv_usec = 0;

			 retval = select(wfd + 1, NULL, &wfds, NULL, &tv);

			/* Don't rely on the value of tv now on! */

			 if (retval > 0)
			 {
				/* FD_ISSET(0, &wfds) will be true. */
			     printf("Some event occured....  ");

				 if FD_ISSET(wfd, &wfds)
				 {
					printf("File writeable.\n");
					fprintf(FPR, "Something\n");

					printf("%d seconds, %d usecs\n", tv.tv_sec, tv.tv_usec);
					sleep(5);
					printf("%d seconds, %d usecs\n", tv.tv_sec, tv.tv_usec);

				 }

			 }
			 else
			         printf("Timeout, File not writeable within 15 seconds.\n");

			fclose(FPR);
			exit(0);
       }