VideoCapture acquiring an image frame of a video

int main(void)
{
    Capture VideoCapture ( " F: \\ 1.avi " ); // This is an error in the implementation of embedded devices, moved on a computer with no errors VS, 
    IF (! Capture.isOpened ())
    {
        printf("fail to open 1.avi\n");
    }

    long totalFrameNumber = capture.get(CV_CAP_PROP_FRAME_COUNT);
    printf("total frame number is:%f\n", totalFrameNumber);

    long frameToStart = 1;
    capture.set(CV_CAP_PROP_POS_FRAMES, frameToStart);

    long frameToStop = 1000;

    double rate = capture.get(CV_CAP_PROP_FPS);
    printf("rate is :%d\n", rate);

    bool stop = false;
    Mat frame;
    int delay = 1000 / rate;
    long currentFrame = frameToStart;
    char path[20] = {};
    int imageNum = 0;

    while (!stop)
    {
        if (!capture.read(frame))
        {
            printf("get frame fail!\n");
            return -1;
        }

        sprintf(path, "F:\\%d.jpg", imageNum);
        imageNum ++ ;
         // save the acquired frame data 
        imwrite (path, Frame); 

        IF (the currentFrame> frameToStop)
        {
            stop = true;
        }
        currentFrame++;
    }

    capture.release();
    return 0;
}