pipes.c

  int pfds[2];
  int SIZE = 30;
  char buf[SIZE];
  char * msg = "This is a pipe example!";

  /** Generates two pipe file descriptors **/
  pipe(pfds);

  /** writer **/
  if (!fork()) {
    printf(" CHILD: writing to pipe\n");
    write(pfds[1], msg, SIZE);
    printf(" CHILD: exiting\n");

  /** reader **/
  }else{
    printf("PARENT: reading from pipe\n");
    read(pfds[0], buf, SIZE);
    printf("PARENT: read \"%s\"\n", buf);
    wait(NULL);
  }