int pipet[2];
    pid_t pid1;
    pid_t pid2;
    int status;

    if (pipe(pipet) == -1)
        _exit(EXIT_FAILURE);

    pid1 = fork();
    if (pid1 == 0)
    {
        close(pipet[0]);
        dup2(pipet[1], 1);
        execvp(code);
    }

    pid2 = fork();
    if (pid2 == 0)
    {
        close(pipet[1]);
        dup2(pipet[0], 0);
        execvp(code);
    }

    close(pipet[0]);
    close(pipet[1]);

    wait(&status); // waits for one child to finish
    wait(&status); // waits for the other child to finish