#include <fcntl.h>
#include <unistd.h>

int main() {
    int fd = open("/dev/stdout", O_WRONLY);
    if (fd == -1) {
        // handle error
        return 1;
    }
    ssize_t bytes_written = write(fd, "Hi\n", 3);
    if (bytes_written != 3) {
        // handle error
        return 1;
    }
    close(fd);
    return 0;
}