#include <stdio.h>
#include <unistd.h>

int main()
{
 int children = 12;
 int p[2];  /* p is pointer to array of two ints */
 int rc;
 int i;

 rc = pipe( p );
 printf( "%d %d\n", p[0], p[1] );

 if ( rc < 0 ) {
   perror( "pipe() failed" );
   return 1;
 }

 for ( i = 0 ; i < children ; i++ )
 {
   rc = fork();  /* create child */

   if ( rc < 0 ) {
     perror( "fork() failed" );
     return 1;
   }

   if ( rc == 0 ) {   /* child */
     int n;
     char buffer[100];
     close( p[0] );  /* don't let this child process access p[0] */
     n = read( p[1], buffer, 100 );
     buffer[n] = '\0';
     printf( "Received: %s\n", buffer );
     exit( 0 );
   }
 }


 /* parent continues here */
 {
   int n;
sleep( 15 );
   close( p[1] );
   n = write( p[0], "<<--FOOTBALL-->>", 16 );

sleep( 30 );

 }

 return 0;
}