text: #include <iostream>
  #include <fstream>
  #include <string>
  #include <sstream>
  
  int main() {
      std::ifstream file("/home/labuser/Desktop/API/bytes_code");
      std::string line = "";
      // unsigned char* message= new unsigned int 
  
      unsigned char message[84] = {0};
      int count = 0;
      std::fill_n(message, 84, 'a');
      // unsigned int aa = 0x1;
      // unsigned char aaa = aa;    
      // std::string aaaa = "0xA8";
  
      if (file.is_open()) {
          while (!file.eof()) {
              getline(file, line);
  
              std::istringstream s(line);
              unsigned char b;
              unsigned int c;
              s >> std:: hex >> c;
              b = c;
  
              message[count++] = b;
          }
  
      } else {
          std::cout << "ERROR\n";
      }
  
      message[83] = count - 1;
  
      for (int i=0; i<84; ++i) {
          // std::cout << message[i] << "\n";
          printf("%02X\n", message[i]);
      }
  
      return 0;
  }