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

int
main(int ac, char **av)
{
    int fdarray[2];
    char buf[512];
    int n;

    pipe(fdarray);
    write(fdarray[1], "hello", 5);
    n = read(fdarray[0], buf, sizeof(buf));
    printf("%d bytes: %.*s\n", n, n, buf);
}