text: #include <fstream>
  #include <filesystem>
  
  int main() {
      // file loading
      std::ifstream myFile;
      myFile.open("musics/sample.mp3", std::ios_base::out | std::ios_base::app | std::ios_base::binary);
      if(!myFile.is_open())
          return EXIT_FAILURE;
  
      std::filesystem::path p{"musics/sample.mp3"};
      printf("file size : %d\n", std::filesystem::file_size(p));
  
      char car;
      for(int i = 0; i < 50; i++)
      {
          if(!myFile.read(&car, 1))
              return EXIT_SUCCESS;
          printf("%02X ", car);
      }
      
  
      return EXIT_SUCCESS;
  }
  