고마워 = (informal)Thank you
고맙네 = (older->younger)Thanks
고맙네 = (informal)(ironize)Thanks
고마워요 = (formal)Thank you
고맙습니다 = (polite)Thank
감사합니다 = (more polite)Thank you
Error (Line 1): "older" is not a struct
Error (Line 3): WTF is double casting