编写一个控制台程序,编程从键盘输入三位数字,输出大写形式,

class Program

{

static void Main(string[] args)

{

string sInput = "";

string sOutput;

while (sInput != "exit")

{

Console.Write("\r\n输入一个三位数（100~999），输入exit 结束：");

sInput = Console.ReadLine();

if (sInput != "exit")

{

fun f = new fun(sInput);

sOutput = f.myConvertSum();

if (string.IsNullOrEmpty(sOutput))

Console.Write("无法转换，请确认输入的是一个三位数（100~999）!");

else

Console.Write("转换结果：{0}", sOutput);

}

else

{

break;

}

}

}

}

class fun

{

string snum="";

public fun(string s)

{

snum = s;

}

public string myConvertSum() {

if (!IsPositveDecimal(snum))

return "";

return Convert3Digit(int.Parse(snum));

}

///

/// 判断是否是3位数正数字字符串

///

/// 判断字符串 /// 如果是数字，返回true，否则返回false private bool IsPositveDecimal(string str)

{

int d;

try

{

d = int.Parse(str);

}

catch (Exception)

{

return false;

}

if (d >= 100 && d <= 999) //限定为3位数

return true;

else

return false;

}

///

/// 转换三位数字100-999 中文大写

///

private string Convert3Digit(int num)

{

const string chineseNum = "零壹贰叁肆伍陆柒捌玖";

string rstring = "";

if (num < 100 || num > 999) return rstring;

int ge = num % 10;

int shi = (num % 100 - ge) / 10;

int bai = num / 100;

if (ge != 0)

{

rstring = chineseNum.Substring(ge, 1);

if (shi != 0)

rstring = chineseNum.Substring(shi, 1) + "拾" + rstring;

else

rstring = chineseNum.Substring(shi, 1) + rstring;

}

else if (shi != 0)

{

rstring = chineseNum.Substring(shi, 1) + "拾" + rstring;

}

rstring = chineseNum.Substring(bai, 1) + "佰" + rstring;

return rstring;

}

}

}