# 一個產生中文累計數的代碼片斷

1
2        /**//// <summary>
3        /// 中文計數
4        /// </summary>
5        /// <param name="num">[1 - 99999]</param>
6        /// <returns></returns>
7        public static string NumToChineseNumStr(int num)
8        {
9            if(num <= 0 || num > 99999)
10                throw new ArgumentException("num");
11            string[] GradeChar = new string[]{"","十","百","千","萬"};
12            string[] DigitChar = new string[]{"一","二","三","四","五","六","七","八","九"};
13            char zero = '零';
14
15            int length = (int) Math.Log10(num) + 1;
16            StringBuilder output = new StringBuilder(length);
17            int[] input = new int[length];
18            int index = -1;
19            while(++index != length)
20            {
21                input[index] = (num  / (length - index == 1? 1 : (int)Math.Pow(10, length -index -1))) % 10;
22            }
23
24            bool needFix = false;
25            if(input.Length == 2 && input[0] == 1)
26                needFix = true;
27
28            for(int pos = 0; pos < input.Length; pos ++)
29            {
30                if(input[pos] == 0)
31                {
32                    if(output[output.Length -1] != zero)
33                        output.Append(zero);
34                    continue;
35                }
36                else if(!(pos == 0 && needFix))
37                {
38                    output.Append(DigitChar[input[pos] -1]);
39                }
41            }
42            if(output[output.Length - 1] == zero)
43                output.Remove(output.Length - 1, 1);
44            return output.ToString();
45        }
46

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