/*
 * Copied from p. 431 Stevens
 */
#include "ourhdr.h"

int main(void)
{
    int    n, fd[2];
    pid_t  pid;
    char   line[MAXLINE];

    
    if (pipe(fd) < 0)
        err_sys ("pipe error");

    if ( (pid = fork()) < 0)
        err_sys ("fork error");

    else if (pid > 0) {    /* parent */
        close (fd[0]);
        write (fd[1], "hello world\n", 12);
  
    } else {
        close (fd[1]);
        n = read (fd[0], line, MAXLINE);
        write (STDOUT_FILENO, line, n);
    }

    exit(0);
}