#include <sys/types.h>	/* open */
#include <sys/stat.h>	/* open */
#include <fcntl.h>	/* O_RDWR, O_CREAT, O_TRUNC, O_WRONLY */
#include <unistd.h>	/* close */

#include "utils.h"

int main(void)
{
	int rc;
	int fd1, fd2;

	fd1 = open("in.txt", O_RDWR | O_CREAT, 0644);
	DIE(fd1 < 0, "open in.txt");

	/* will fail if out.txt does not exist */
	fd2 = open("out.txt", O_WRONLY | O_TRUNC);
	DIE(fd2 < 0, "open out.txt");

	rc = close(fd1);
        DIE(rc < 0, "close fd1");
        
        rc = close(fd2);
        DIE(rc < 0, "close fd2");

	return 0;
}