Yanqiao Zhan nkuclassical

## pipeline-three-processes.c
/** Pipeline between three processes.

    http://stackoverflow.com/q/20056084/

   See @chill's answer: http://stackoverflow.com/a/8092270
 */
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
	/** Pipeline between three processes.

	http://stackoverflow.com/q/20056084/

	See @chill's answer: http://stackoverflow.com/a/8092270
	*/
	#include <assert.h>
	#include <errno.h>
	#include <stdio.h>
	#include <stdlib.h>