bool FBullCowGame::IsLowercase(FString Word) const
{
	//check the position of uppercase letter
	std::cout << "Uppercase position: " << Word.find_first_not_of("qwertyuiopasdfghjklzxcvbnm");
	//check the value of static const "npos" variable
	std::cout << ". npos = " << FString::npos << std::endl;

	if (Word.length() <= 1
		|| Word.find_first_not_of("qwertyuiopasdfghjklzxcvbnm") != FString::npos) // my solution using "find_first_not_of"
	{
		return false;
	}

	return true;
}