int main(int argc, char *argv[])
{
    int fd[2];
    pid_t pid;
    char buf;
    pipe( fd );
    pid = fork();
    switch( fork() ){
        case -1:
            perror( "fork()" );
            exit( 1 );
        case 0:
            close(fd[0]);
            while (read(0, &buf, 1) > 0) {
                write(fd[1], &buf, 1);
            }
            write(1, "Death childn", 12);
            close(fd[1]);
            break;
        default:
            close(fd[1]);
            while (read(fd[0], &buf, 1) > 0) {
                write(1, &buf, 1);
            }
            write(1, "Death parentn", 12);
            close(fd[0]);
            wait(NULL);
            break;
    }
}

while (read(0, &buf, 1) > 0) {
                    write(fd[1], &buf, 1);
                }

while (read(fd[0], &buf, 1) > 0) {
                    write(1, &buf, 1);
                }