C#实现阿拉伯数字到大写中文的转换

原创

跟张哥学编程 2024-12-25 10:28:13 ©著作权

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using System;

namespace ConsoleApp { /// <summary> /// 本类实现阿拉伯数字到大写中文的转换 /// 该类没有对非法数字进行判别 /// 请调用NumToChn方法 /// </summary> public class NumFormat { public NumFormat() { // // TODO: 在此处添加构造函数逻辑 // } // 转换数字 private char ToNum(char x) { string strChnNames="零一二三四五六七八九"; string strNumNames="0123456789"; return strChnNames[strNumNames.IndexOf(x)]; } // 转换万以下整数 private string ChangeInt(string x) { string[] strArrayLevelNames=new string[4] {"","十","百","千"}; string ret = ""; int i; for (i=x.Length-1;i>=0;i--) if (x[i] == '0') ret = ToNum(x[i]) + ret; else ret = ToNum(x[i]) + strArrayLevelNames[x.Length-1-i] + ret; while ((i=ret.IndexOf("零零"))!=-1) ret=ret.Remove(i, 1); if (ret[ret.Length-1]=='零' && ret.Length>1) ret=ret.Remove(ret.Length-1,1); if (ret.Length>=2 && ret.Substring(0,2)=="一十") ret=ret.Remove(0,1); return ret; }

// 转换整数 private string ToInt(string x) { int len = x.Length; string ret,temp; if (len<=4) ret = ChangeInt(x); else if (len<=8) { ret = ChangeInt(x.Substring(0,len-4)) + "万"; temp = ChangeInt(x.Substring(len-4,4)); if (temp.IndexOf("千")==-1 && temp!="") ret += "零" + temp; else ret += temp; } else { ret=ChangeInt(x.Substring(0,len-8)) + "亿"; temp=ChangeInt(x.Substring(len-8,4)); if (temp.IndexOf("千")==-1 && temp!="") ret += "零" + temp; else ret += temp; ret += "万"; temp = ChangeInt(x.Substring(len-4,4)); if (temp.IndexOf("千")==-1 && temp!="") ret += "零" + temp; else ret += temp; } int i; if ((i=ret.IndexOf("零万"))!=-1) ret = ret.Remove(i+1,1); while ((i=ret.IndexOf("零零"))!=-1) ret = ret.Remove(i,1); if (ret[ret.Length-1]=='零' && ret.Length>1) ret = ret.Remove(ret.Length-1,1); return ret; }

private string ToDecimal(string x) { string ret=""; for (int i=0;i<x.Length;i++) ret += ToNum(x[i]); return ret; }

public string NumToChn(string x) { if (x.Length==0) return ""; string ret=""; if (x[0]=='-') { ret="负"; x=x.Remove(0,1); } if (x[0].ToString()==".") x="0"+x; if (x[x.Length-1].ToString()==".") x=x.Remove(x.Length-1,1); if (x.IndexOf(".")>-1) ret += ToInt(x.Substring(0,x.IndexOf(".")))+"点"+ToDecimal(x.Substring(x.IndexOf(".")+1)); else ret += ToInt(x); return ret; } } }

测试工程

using System;

namespace ConsoleApp { class MainClass { static void Main(string[] args) { /* System.Console.WriteLine("Hello, The World!"); System.Console.WriteLine("My Love!");

ClassTest ct = new ClassTest(); System.Console.WriteLine(ct.Get_Str()); / / // 重载运算符 MyVector v1 = new MyVector(5, 12); MyVector v2 = new MyVector(4, 3); MyVector v3 = new MyVector(); v3 = v1 + v2; System.Console.WriteLine("{0}测试一下", v3.Length); */

// 转换成大写数字 NumFormat nf = new NumFormat(); string x; while (true) { Console.Write("X="); x = Console.ReadLine(); if (x == "") break; Console.WriteLine("{0}={1}", x, nf.NumToChn(x)); } } } }