Print the hex value of a char array

print_hex.cpp

void
print_hex(
   char*  value,
   size_t size)
{
   for (size_t i = 0; i < size; ++i) {
      printf("%02.2x ", (unsigned)(unsigned char) value[i]);
   }
}   
   
  
   
   print_hex(TEST_MESSAGE_ERROR, sizeof(TEST_MESSAGE_ERROR));
   std::cout << std::endl;
   print_hex(message.buffers.front().base, message.buffers.front().len);
   std::cout << std::endl;