判断字符串是否是数字标点空白

        static void Main(string[] args)
        {
            Console.WriteLine("*********");

            CharFunctionality();


            Console.ReadLine();
        }

        private static void CharFunctionality()
        {
            char myChar = 'a';
            //是否是数字
            Console.WriteLine("char.IsDigit('a'):{0}", char.IsDigit(myChar));
            //是否是字母
            Console.WriteLine("char.isletter('a');{0}", char.IsLetter(myChar));
            //是否unicode是否为空
            Console.WriteLine("char iswithspace('hello there',5);{0}", char.IsWhiteSpace("hello there", 5));
            Console.WriteLine("char iswithspace('hello there',6);{0}", char.IsWhiteSpace("hello there", 6));
            //是都是标点符号
            Console.WriteLine("char.ispunctuation('?'):{0}", char.IsPunctuation('?'));


        }