如何在 c++ 中读取文本文件

我想检测视频中预定义的特定内容。为此，我分别使用一段已经识别的视频和另一个输入视频。我已经读取了识别的视频中的数据，并且咬合数组保存在文本文件中。现在我想将保存的文本文件的内容与输入的视频内容进行比较。

这是我的代码

    void CFfmpegmethods::VideoRead(){
    av_register_all();
    avformat_network_init();
    ifstream inFile;
    inFile.open("H:\Sanduni_projects\sample_ad.txt");
    const char *url = "H:\Sanduni_projects\ad_1.mp4";
    AVDictionary *options = NULL;
    AVFormatContext *s = avformat_alloc_context();
    AVPacket *pkt = new AVPacket(); //this structure stores compressed data
    //open an input stream and read the header
    int ret = avformat_open_input(&s, url, NULL,NULL);
    //avformat_find_stream_info(s, &options); //finding the missing information 
    if (ret < 0)
        abort();
    if (!inFile) {
        cerr << "Unable to open file datafile.txt";
        exit(1);   // call system to stop
    }
    av_dict_set(&options, "video_size", "640x480", 0);
    av_dict_set(&options, "pixel_format", "rgb24", 0);
    if (avformat_open_input(&s, url, NULL, &options) < 0){
        abort();
    }
    av_dict_free(&options);
    AVDictionaryEntry *e;
    if (e = av_dict_get(options, "", NULL, AV_DICT_IGNORE_SUFFIX)) {
        fprintf(stderr, "Option %s not recognized by the demuxer.n", e->key);
        abort();
    }
    int i = 1;
    int64_t duration = 0;
    int size = 0;
    uint8_t *data; //Unsigned integer type with a width of exactly 8 bits.
    int sum = 0;
    int total_size = 0;
    int64_t total_duration = 0;
    int packet_size = 0;
    int64_t stream_index = 0;
    int64_t bit_rate = 0;
    AVBufferRef *buf;
    //writing data to a file
    outdata.open("H:\Sanduni_projects\sample_ad.txt");
    //outdata.open("H:\Sanduni_projects\log.txt");
    if (!outdata){
        cerr << "Error: file could not be opened" << endl;
        exit(1);
    }
    //Split what is stored in the file into frames and return one for each call
    //returns the next frame of the stream
    while(1){
        int frame = av_read_frame(s, pkt); //one frame is readed.
        if (frame < 0) break;
        size = pkt->size;
        data = pkt->data;
        for (int j = 0; j < size; j++){
            for (int k = 0; k < 12; k++){
                while (!inFile.eof){

                }
                //if (data[j] != ) break;
            }
        }
        //int decode = avcodec_send_packet(avctx, pkt);
    }
    //make the packet free
    av_packet_unref(pkt);
    delete pkt;
    cout << "total size: " << total_size << endl;
    cout << "total duration:" << total_duration << endl;
    outdata.close();
    //Close the file after reading
    avformat_close_input(&s);
}

void CFfmpegmethods::SampleAdCreation(){
    av_register_all();
    const char *url_ref = "H:\Sanduni_projects\sample_ad.mp4";
    AVDictionary *options = NULL;
    AVDictionary *options_ref = NULL;
    AVFormatContext *s = avformat_alloc_context();
    AVPacket *pkt = new AVPacket(); //this structure stores compressed data

    //open an input stream and read the header
    int ret = avformat_open_input(&s, url_ref, NULL, NULL);
    if (ret < 0)
        abort();
    av_dict_set(&options, "video_size", "640x480", 0);
    av_dict_set(&options, "pixel_format", "rgb24", 0);
    if (avformat_open_input(&s, url_ref, NULL, &options) < 0){
        abort();
    }
    av_dict_free(&options);
    AVDictionaryEntry *e;
    if (e = av_dict_get(options, "", NULL, AV_DICT_IGNORE_SUFFIX)) {
        fprintf(stderr, "Option %s not recognized by the demuxer.n", e->key);
        abort();
    }
    uint8_t *data; 
    //writing data to a file
    outdata.open("H:\Sanduni_projects\sample_ad.txt");
    if (!outdata){
        cerr << "Error: file could not be opened" << endl;
        exit(1);
    }
    for (int m = 0; m < 12; m++){
        int size = pkt->size;
        int frame = av_read_frame(s, pkt); 
        if (frame < 0) break;
        data = pkt->data;
        for (int j = 0; j < size; j++){
            outdata << data[j];
        } outdata<<endl;
    }
    //make the packet free
    av_packet_unref(pkt);
    delete pkt;
    outdata.close();
    //Close the file after reading
    avformat_close_input(&s);
}