My LowerCase() Solution

Unreal Courses Talk
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1 
  bool FBullCowGame::IsLowercase(FString Word) const
{
	for (auto Letter : Word)
	{
		if (Letter == '\0' || Letter == ' ')
			return false;
		if(!islower(Letter))
			return false;
	}
	return true;
}

Also I Put a not operator(!) when the function is called.