efwfw

    unsigned char** arr = malloc(len * sizeof(unsigned char*));
    for (int i = 0; i < len; i++)
    {
        arr[i] = malloc(8 * sizeof(unsigned char));
    }
    for (int i = 0; i < len; i++)
    {
        for(int j = 0; j < 8; j++)
        {
            arr[i][j] = '0';
        }
    }