// 例如：(new Money(200)).ToString() == "贰佰元" namespace Skyiv.Util {     using System.Text;     class Test {         static void Main() {             for (;;) {                 System.Console.Write("金额: ");                 string s = System.Console.ReadLine();                 decimal m;                 try {                     m = decimal.Parse(s);                 } catch {                     break;                 }                 System.Console.WriteLine("大写: " + new Money(m));             }         }     }     // 该类重载的 ToString() 方法返回的是大写金额字符串     class Money {         public string Yuan = "元"; // “元”，可以改为“圆”、“卢布”之类         public string Jiao = "角"; // “角”，可以改为“拾”         public string Fen = "分"; // “分”，可以改为“美分”之类         static string Digit = "零壹贰叁肆伍陆柒捌玖"; // 大写数字         bool isAllZero = true; // 片段内是否全零         bool isPreZero = true; // 低一位数字是否是零         bool Overflow = false; // 溢出标志         long money100; // 金额*100，即以“分”为单位的金额         long value; // money100的绝对值         StringBuilder sb = new StringBuilder(); // 大写金额字符串，逆序         // 只读属性: "零元"         public string ZeroString {             get {                 return Digit[0] + Yuan;             }         }         // 构造函数         public Money(decimal money) {             try {                 money100 = (long)(money * 100m);             } catch {                 Overflow = true;             }             if (money100 == long.MinValue) Overflow = true;         }         // 重载 ToString() 方法，返回大写金额字符串         public override string ToString() {             if (Overflow) return "金额超出范围";             if (money100 == 0) return ZeroString;             string[] Unit = {                 Yuan,                 "万",                 "亿",                 "万",                 "亿亿"             };             value = System.Math.Abs(money100);             ParseSection(true);             for (int i = 0; i < Unit.Length && value > 0; i++) {                 if (isPreZero && !isAllZero) sb.Append(Digit[0]);                 if (i == 4 && sb.ToString().EndsWith(Unit[2])) sb.Remove(sb.Length - Unit[2].Length, Unit[2].Length);                 sb.Append(Unit[i]);                 ParseSection(false);                 if ((i % 2) == 1 && isAllZero) sb.Remove(sb.Length - Unit[i].Length, Unit[i].Length);             }             if (money100 < 0) sb.Append("负");             return Reverse();         }         // 解析“片段”: “角分(2位)”或“万以内的一段(4位)”         void ParseSection(bool isJiaoFen) {             string[] Unit = isJiaoFen ? new string[] {                 Fen,                 Jiao             }: new string[] {                 "",                 "拾",                 "佰",                 "仟"             };             isAllZero = true;             for (int i = 0; i < Unit.Length && value > 0; i++) {                 int d = (int)(value % 10);                 if (d != 0) {                     if (isPreZero && !isAllZero) sb.Append(Digit[0]);                     sb.AppendFormat("{0}{1}", Unit[i], Digit[d]);                     isAllZero = false;                 }                 isPreZero = (d == 0);                 value /= 10;             }         }         // 反转字符串         string Reverse() {             StringBuilder sbReversed = new StringBuilder();             for (int i = sb.Length - 1; i >= 0; i--) sbReversed.Append(sb[i]);             return sbReversed.ToString();         }     } }