Тестовые примеры / ch8 / test_pipe

	#include <iostream.h>
	
	#include <stdio.h>

	#include <stdlib.h>

   	#include <string.h>

   	#include <sys/types.h>

   	#include <sys/wait.h>

   	#include <unistd.h>



   	int main() 

	{

      			pid_t 		child_pid;

      			int    		fifo[2], status;

      			char   		buf[80];



     		 	if (pipe(fifo)==-1) perror("pipe"), exit(1);

     		 	switch (child_pid=fork()) 

			{

	 			case -1: 		perror("fork");

		  				exit(2);

         				case 0:  		close(fifo[0]);	/* child process */

		  				write(fifo[1],"Child %d executed\n",getpid());

		  				close(fifo[1]);

		  				exit(0);

      			}

      			close(fifo[1]);				/* parent process */

      			while (read(fifo[0],buf,80)) cout << buf << endl;

     		 	close(fifo[0]);

     		 	if (waitpid(child_pid,&status,0)==child_pid && WIFEXITED(status))

         					return WEXITSTATUS(status);

      			return 3;

  	}