file = fopen("capture.bmp", "r");

        //get bitmap start
        fseek(file, 10, SEEK_SET);
        fread(&start, 4, 1, file);
        printf("%d\n", start);

        //get width
        fseek(file, 18, SEEK_SET);
        fread(&width, 4, 1, file);
        printf("%d\n", width);

        //get height
        fseek(file, 22, SEEK_SET);
        fread(&height, 4, 1, file);
        printf("%d\n", height);

        //calculate additional bytes
        skip = (width * 3) % 4;
        printf("%d\n", skip);

        data = malloc(width * height * 3);

        fseek(file, start, SEEK_SET);
        for (i = 0; i < height; i++)
        {
            fread(&data[i * width * 3], width * 3, 1, file);
            fseek(file, skip, SEEK_CUR);
        }

        for (i = 0; i < width * height * 3; i += 3)
        {
            blue += data[i];
            green += data[i + 1];
            red += data[i + 2];
            //printf("%d %d %d\n", red, green, blue);
        }

        red /= width * height;
        green /= width * height;
        blue /= width * height;
        printf("%d %d %d\n", red, green, blue);