// ... the usual includes ...


// the named pipe (or fifo) called channel must be
// created (using the mkfifo command or the mkfifo()
// system function) before this program is run.

// the reading and writing programs must run at the
// same time.

char * s[] =
 { "one two three four\n",
   "five six\n",
   "seven eight nine ten\n",
   "eleven\n", 
   NULL };

int main()
{ int r, i, f = open("channel", O_WRONLY);
  if (f < 0)
  { perror("w open");
    exit(1); }
  for (i = 0; 1; i += 1)
  { if (s[i] == NULL)
      break;
    r = write(f, s[i], strlen(s[i]));
    printf("w %d\n", r); }
  close(f); }