초성 얻어오기

     static char DivideHangul(char hangul)
        {
            const int MiddleNumber = 21;//중성 수
            const int EndNumber = 28;//종성 수
            const int UnicodeHanGulStart = 0xac00;//유니코드 한글 시작
            const int ChosungStart = 0x1100;//초성시작
            char rtnval = new char();
            int HangulLocal = hangul - UnicodeHanGulStart;
            rtnval = (char)(ChosungStart + HangulLocal / (MiddleNumber * EndNumber));// 초성을 얻어낸다.
            return rtnval;
        }