#include <unistd.h>
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

int main() {
pid_t pid;
int fd[2];
int result = pipe(fd);

if(result < 0){
perror("pipe");
exit(1);
}

pid = fork();

if(pid < 0){

perror("fork");
exit(2);

} else if(pid == 0){ /* код потомка */

int message = 0;
for(; message < 100000; message++){

write(fd[1], &message, sizeof(int));

}
close(fd[1]);
exit(0);

} else {
int message, counter = 0;

while(true){

read(fd[0], &message, sizeof(int));
printf("message: %dn", message);
counter++;
if(counter == 9){
counter = 0;
sleep(1);
}

}

}

return 0;
}