How to convert an integer to its verbal representation?

Question

Is there a library or class / function that I can use to convert the whole to this verbal representation?

Input Example:

4,567,788`

Output Example:

Four million five hundred sixty seven thousand seven hundred eighty eight

Answer 1

if you use the code found in: converting numbers to C # words and you need this for decimal numbers, here's how to do it:

public string DecimalToWords(decimal number) { if (number == 0) return "zero"; if (number < 0) return "minus " + DecimalToWords(Math.Abs(number)); string words = ""; int intPortion = (int)number; decimal fraction = (number - intPortion)*100; int decPortion = (int)fraction; words = NumericToWords(intPortion); if (decPortion > 0) { words += " and "; words += NumericToWords(decPortion); } return words; } 

Answer 2

Currently, the best, most reliable library for this is definitely Humanizer . It opens and is available as nuget:

 Console.WriteLine(4567788.ToWords()); // => four million five hundred and sixty-seven thousand seven hundred and eighty-eight 

It also has a wide range of tools for solving small problems that every application has with string s, enum s, DateTime s, TimeSpan , etc. and supports many different languages.

 Console.WriteLine(4567788.ToOrdinalWords().Underscore().Hyphenate().ApplyCase(LetterCasing.AllCaps)); // => FOUR-MILLION-FIVE-HUNDRED-AND-SIXTY-SEVEN-THOUSAND-SEVEN-HUNDRED-AND-EIGHTY-EIGHTH 

Answer 3

Fully recursive version:

 private static string[] ones = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen", }; private static string[] tens = { "zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" }; private static string[] thous = { "hundred", "thousand", "million", "billion", "trillion", "quadrillion" }; public static string ToWords(decimal number) { if (number < 0) return "negative " + ToWords(Math.Abs(number)); int intPortion = (int)number; int decPortion = (int)((number - intPortion) * (decimal) 100); return string.Format("{0} dollars and {1} cents", ToWords(intPortion), ToWords(decPortion)); } private static string ToWords(int number, string appendScale = "") { string numString = ""; if (number < 100) { if (number < 20) numString = ones[number]; else { numString = tens[number / 10]; if ((number % 10) > 0) numString += "-" + ones[number % 10]; } } else { int pow = 0; string powStr = ""; if (number < 1000) // number is between 100 and 1000 { pow = 100; powStr = thous[0]; } else // find the scale of the number { int log = (int)Math.Log(number, 1000); pow = (int)Math.Pow(1000, log); powStr = thous[log]; } numString = string.Format("{0} {1}", ToWords(number / pow, powStr), ToWords(number % pow)).Trim(); } return string.Format("{0} {1}", numString, appendScale).Trim(); } 

The current one works up to (short) quadrillion. Additional support (for large numbers or for long scale ) can be added simply by changing the variable thous .

Perhaps unnecessarily complicated (a special case for hundreds of errors makes me a little bit), considering that changing a non-recursive version is also quite simple.

Answer 4

Here is the Spanish version:

  public static string numeroALetras(int number) { if (number == 0) return "cero"; if (number < 0) return "menos " + numeroALetras(Math.Abs(number)); string words = ""; if ((number / 1000000) > 0) { words += numeroALetras(number / 1000000) + " millón "; number %= 1000000; } if ((number / 1000) > 0) { words += (number / 1000) == 1? "mil ": numeroALetras(number / 1000) + " mil "; number %= 1000; } if ((number / 100) == 1) { if (number == 100) words += "cien"; else words += (number / 100)> 1? numeroALetras(number / 100) + " ciento ":"ciento "; number %= 100; } if ((number / 100) > 1) { var hundredMap = new[] {"","", "dosc", "tresc", "cuatroc", "quin", "seisc", "sietec", "ochoc", "novec" }; if (number > 199) words += hundredMap[number/100] + "ientos "; else { words += numeroALetras(number / 100) + " ientos "; } number %= 100; } if (number > 0) { if (words != "") words += " "; var unitsMap = new[] { "cero", "uno", "dos", "tres", "cuatro", "cinco", "seis", "siete", "ocho", "nueve", "diez", "once", "doce", "trece", "catorce", "quince", "dieciseis", "diecisiete", "dieciocho", "diecinueve", "veinte" }; var tensMap = new[] { "cero", "diez", "veinti", "treinta", "cuarenta", "cincuenta", "sesenta", "setenta", "ochenta", "noventa" }; if (number < 21) words += unitsMap[number]; else { words += tensMap[number / 10]; if ((number % 10) > 0) words += ((number % 10)>2?" y ": "") + unitsMap[number % 10]; } } return words; } 

Answer 5

 Imports System.Text Public Class NumberWriter Public Shared Function Parse(ByVal Number As String) As String If Not AreNumbers(Number) Then Return "" Dim TempQueue As New Queue(Of String) For Each ItemA As Char In Number.Replace(",", "").Reverse TempQueue.Enqueue(ItemA) Next Dim Blocks As New List(Of String) Dim BlockEmpty As New List(Of Boolean) Do Dim TempBlock As New StringBuilder(3) TempBlock.Append(TempQueue.Dequeue) If TempQueue.Count > 0 Then TempBlock.Append(TempQueue.Dequeue) If TempQueue.Count > 0 Then TempBlock.Append(TempQueue.Dequeue) End If End If Blocks.Add(StrReverse(TempBlock.ToString)) BlockEmpty.Add(TempBlock.ToString = "000") If TempQueue.Count < 1 Then Exit Do Loop Dim ResultStack As New Stack(Of String) For int1 As Integer = 0 To Blocks.Count - 1 ResultStack.Push(ReadBlock(Blocks(int1)) & If(Not int1 = 0, If(Not BlockEmpty(int1), " " & CapitalizeWord(GetPlaceValueSet(int1)) & If(BlockEmpty(int1 - 1), "", ", "), ""), "")) Next Dim Result1 As String = "" Do Until ResultStack.Count < 1 Result1 &= ResultStack.Pop Loop Return RemoveGrammarErrors(Result1) End Function Private Shared Function RemoveGrammarErrors(ByVal Str As String) As String Dim tstr As String = Str tstr.Replace(" ", " ") tstr.Replace(" , ", ", ") Return tstr End Function Private Shared Function AreNumbers(ByVal Str1 As String) As Boolean Dim Numbers() As String = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ","} For Each ItemA As Char In Str1 Dim IsN As Boolean = False For Each ItemB As String In Numbers If ItemA = ItemB Then IsN = True Next If Not IsN Then Return False End If Next Return True End Function Private Shared Function ReadBlock(ByVal Block As String) Select Case Block.Length Case 1 Return ReadSingleDigit(Block) Case 2 Return ReadTwoDigits(Block) Case 3 Return ReadThreeDigits(Block) Case Else Throw New Exception End Select End Function Private Shared Function ReadThreeDigits(ByVal Digits As String) If Digits.Length > 3 Then Throw New ArgumentException("There are too many digits.") Dim Result As String = "" If Not Digits(0) = "0" Then Result &= ReadSingleDigit(Digits(0)) & " Hundred " End If Result &= ReadTwoDigits(Digits.Substring(1)) Return Result End Function Private Shared Function ReadTwoDigits(ByVal Digits As String) If Digits.Length > 2 Then Throw New ArgumentException("There are too many digits.") Select Case Digits(0) Case "0" Return ReadSingleDigit(Digits(1)) Case "1" Return ReadTeenNumber(Digits) Case Else Return ReadFirstInNumberPair(Digits(0)) & If(Digits(1) = "0", "", "-" & ReadSingleDigit(Digits(1))) End Select End Function Private Shared Function ReadSingleDigit(ByVal Digit As String) As String If Not Digit.Length = 1 Then Throw New ArgumentException("There must be only one digit and it must be more than zero.") Select Case Digit Case "0" Return "" Case "1" Return "One" Case "2" Return "Two" Case "3" Return "Three" Case "4" Return "Four" Case "5" Return "Five" Case "6" Return "Six" Case "7" Return "Seven" Case "8" Return "Eight" Case "9" Return "Nine" Case Else Throw New Exception() End Select End Function Private Shared Function ReadTeenNumber(ByVal Num As String) As String Select Case Num Case "11" Return "Eleven" Case "12" Return "Twelve" Case "13" Return "Thirteen" Case "14" Return "Fourteen" Case "15" Return "Fifteen" Case "16" Return "Sixteen" Case "17" Return "Seventeen" Case "18" Return "Eighteen" Case "19" Return "Nineteen" Case Else Throw New Exception() End Select End Function Private Shared Function ReadFirstInNumberPair(ByVal Num As String) As String If Not (Num > 1 OrElse Num < 10) Then Throw New ArgumentException("Number must be more than 1 and less than 10") Select Case Num Case "2" Return "Twenty" Case "3" Return "Thirty" Case "4" Return "Fourty" Case "5" Return "Fifty" Case "6" Return "Sixty" Case "7" Return "Seventy" Case "8" Return "Eighty" Case "9" Return "Ninety" Case Else Throw New Exception() End Select End Function Private Shared Function CapitalizeWord(ByVal Word As String) As String Return Word.Substring(0, 1).ToUpper & Word.Substring(1) End Function Private Shared Function GetPlaceValueSet(ByVal Num As Byte) As String Select Case Num Case 0 Return "" 'Hundreds Case 1 Return "Thousand" Case 2 Return "Million" Case 3 Return "Billion" Case 4 Return "Trillion" Case 5 Return "Quadrillion" Case 6 Return "Quintillion" Case 7 Return "Sextillion" Case 8 Return "Septillion" Case 9 Return "Octillion" Case 10 Return "Nonillion" Case 11 Return "octillion" Case 12 Return "nonillion" Case 13 Return "decillion" Case 14 Return "undecillion" Case 15 Return "dodecillion," Case 16 Return "tredecillion" Case 17 Return "quattuordecillion" Case 18 Return "quindecillion" Case 19 Return "sexdecillion" Case 20 Return "septendecillion" Case 21 Return "octodecillion" Case 22 Return "novemdecillion" Case 23 Return "vigintillion" Case 24 Return "unvigintillion" Case 25 Return "dovigintillion" Case 26 Return "trevigintillion" Case 27 Return "quattuorvigintillion" Case 28 Return "quinvigintillion" Case 29 Return "sexvigintillion" Case 30 Return "septenvigintillion" Case 31 Return "octovigintillion" Case 32 Return "novemvigintillion" Case 33 Return "trigintillion" Case 34 Return "untrigintillion" Case 35 Return "dotrigintillion" Case 36 Return "tretrigintillion" Case 37 Return "quattuortrigintillion" Case 38 Return "quintrigintillion" Case 39 Return "sextrigintillion" Case 40 Return "septentrigintillion" Case 41 Return "octotrigintillion" Case Else Throw New Exception End Select End Function End Class 

Sorry in VB.NET, but it works completely. This is one way. Number for verbal. I believe that it processes digits up to 123 characters long.

Answer 6

http://www.exchangecore.com/blog/convert-number-words-c-sharp-console-application/ contains some C # scripts that handle very large numbers and very small decimal numbers.

 using System; using System.Collections.Generic; using System.Text; namespace NumWords { class Program { // PROGRAM HANDLES NEGATIVE AND POSITIVE DOUBLES static String NumWordsWrapper(double n) { string words = ""; double intPart; double decPart = 0; if (n == 0) return "zero"; try { string[] splitter = n.ToString().Split('.'); intPart = double.Parse(splitter[0]); decPart = double.Parse(splitter[1]); } catch { intPart = n; } words = NumWords(intPart); if (decPart > 0) { if (words != "") words += " and "; int counter = decPart.ToString().Length; switch (counter) { case 1: words += NumWords(decPart) + " tenths"; break; case 2: words += NumWords(decPart) + " hundredths"; break; case 3: words += NumWords(decPart) + " thousandths"; break; case 4: words += NumWords(decPart) + " ten-thousandths"; break; case 5: words += NumWords(decPart) + " hundred-thousandths"; break; case 6: words += NumWords(decPart) + " millionths"; break; case 7: words += NumWords(decPart) + " ten-millionths"; break; } } return words; } static String NumWords(double n) //converts double to words { string[] numbersArr = new string[] { "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" }; string[] tensArr = new string[] { "twenty", "thirty", "fourty", "fifty", "sixty", "seventy", "eighty", "ninty" }; string[] suffixesArr = new string[] { "thousand", "million", "billion", "trillion", "quadrillion", "quintillion", "sextillion", "septillion", "octillion", "nonillion", "decillion", "undecillion", "duodecillion", "tredecillion", "Quattuordecillion", "Quindecillion", "Sexdecillion", "Septdecillion", "Octodecillion", "Novemdecillion", "Vigintillion" }; string words = ""; bool tens = false; if (n < 0) { words += "negative "; n *= -1; } int power = (suffixesArr.Length + 1) * 3; while (power > 3) { double pow = Math.Pow(10, power); if (n >= pow) { if (n % pow > 0) { words += NumWords(Math.Floor(n / pow)) + " " + suffixesArr[(power / 3) - 1] + ", "; } else if (n % pow == 0) { words += NumWords(Math.Floor(n / pow)) + " " + suffixesArr[(power / 3) - 1]; } n %= pow; } power -= 3; } if (n >= 1000) { if (n % 1000 > 0) words += NumWords(Math.Floor(n / 1000)) + " thousand, "; else words += NumWords(Math.Floor(n / 1000)) + " thousand"; n %= 1000; } if (0 <= n && n <= 999) { if ((int)n / 100 > 0) { words += NumWords(Math.Floor(n / 100)) + " hundred"; n %= 100; } if ((int)n / 10 > 1) { if (words != "") words += " "; words += tensArr[(int)n / 10 - 2]; tens = true; n %= 10; } if (n < 20 && n > 0) { if (words != "" && tens == false) words += " "; words += (tens ? "-" + numbersArr[(int)n - 1] : numbersArr[(int)n - 1]); n -= Math.Floor(n); } } return words; } static void Main(string[] args) { Console.Write("Enter a number to convert to words: "); Double n = Double.Parse(Console.ReadLine()); Console.WriteLine("{0}", NumWordsWrapper(n)); } } } 

EDIT: translate code from blog post

Answer 7

Here is my solution, hope it helps you

 namespace ConsoleApplication3 { class Program { static void Main(string[] args) { string s = Console.ReadLine(); ConvertMyword(int.Parse(s)); Console.Read(); } static void ConvertMyword(int number) { int flag = 0; int lflag = 0; string words = String.Empty; string[] places = { "ones", "ten", "hundred", "thousand", "ten thousand", "lacs","tenlacs","crore","tencrore" }; string rawnumber = number.ToString(); char[] a = rawnumber.ToCharArray(); Array.Reverse(a); for (int i = a.Length - 1; i >= 0; i--) { if (i % 2 == 0 && i > 2) { if (int.Parse(a[i].ToString()) > 1) { if (int.Parse(a[i - 1].ToString()) == 0) { words = words + getNumberStringty(int.Parse(a[i].ToString())) + " " + places[i - 1] + " "; } else { words = words + getNumberStringty(int.Parse(a[i].ToString())) + " "; } } else if (int.Parse(a[i].ToString()) == 1) { if (int.Parse(a[i - 1].ToString())== 0) { words = words +"Ten" + " "; } else { words = words + getNumberStringteen(int.Parse(a[i - 1].ToString())) + " "; } flag = 1; } } else { if (i == 1 || i == 0) { if (int.Parse(a[i].ToString()) > 1) { words = words + getNumberStringty(int.Parse(a[i].ToString())) + " " + getNumberString(int.Parse(a[0].ToString())) + " "; break; } else if (int.Parse(a[i].ToString()) == 1) { if (int.Parse(a[i - 1].ToString()) == 0) { words = words + "Ten" + " "; } else { words = words + getNumberStringteen(int.Parse(a[i - 1].ToString())) + " "; } break; } else if (int.Parse(a[i - 1].ToString()) != 0) { words = words + getNumberString(int.Parse(a[i - 1].ToString())) + " "; break; } else { break; } } else { if (flag == 0) { for(int l=i;l>=0;l--) { if (int.Parse(a[l].ToString())!=0) { lflag = 1; } } if (lflag == 1 && int.Parse(a[i].ToString())!=0) { words = words + getNumberString(int.Parse(a[i].ToString())) + " " + places[i] + " "; lflag = 0; } else if(lflag == 0) { // words = words + getNumberString(int.Parse(a[i].ToString())) + " " + places[i] + " "; lflag = 0; break; } } else { words = words + " " + places[i] + " "; flag = 0; } } } } Console.WriteLine(words); } static string getNumberString(int num) { string Word = String.Empty; switch (num) { case 1: Word = "one"; break; case 2: Word = "two"; break; case 3: Word = "three"; break; case 4: Word = "four"; break; case 5: Word = "five"; break; case 6: Word = "six"; break; case 7: Word = "seven"; break; case 8: Word = "eight"; break; case 9: Word = "nine"; break; } return Word; } static string getNumberStringty(int num) { string Word = String.Empty; switch (num) { case 2: Word = "twenty"; break; case 3: Word = "thirty"; break; case 4: Word = "fourty"; break; case 5: Word = "fifty"; break; case 6: Word = "sixty"; break; case 7: Word = "seventy"; break; case 8: Word = "eighty"; break; case 9: Word = "ninty"; break; } return Word; } static string getNumberStringteen(int num) { string Word = String.Empty; switch (num) { case 1: Word = "eleven"; break; case 2: Word = "tewlve"; break; case 3: Word = "thirteen"; break; case 4: Word = "fourteen"; break; case 5: Word = "fifteen"; break; case 6: Word = "sixteen"; break; case 7: Word = "seventeen"; break; case 8: Word = "eighteen"; break; case 9: Word = "ninteen"; break; } return Word; } } } 

Answer 8

If anyone wants a JavaScript version

 Number.prototype.numberToWords = function () { var unitsMap = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"]; var tensMap = ["zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"]; var num = this.valueOf(); if (Math.round(num == 0)) { return "zero"; } if (num < 0) { var positivenum = Math.abs(num); return "minus " + Number(positivenum).numberToWords(); } var words = ""; if (Math.floor(num / 1000000) > 0) { words += Math.floor(num / 1000000).numberToWords() + " million "; num = Math.floor(num % 1000000); } if (Math.floor(num / 1000) > 0) { words += Math.floor(num / 1000).numberToWords() + " thousand "; num = Math.floor(num % 1000); } if (Math.floor(num / 100) > 0) { words += Math.floor(num / 100).numberToWords() + " hundred "; num = Math.floor(num % 100); } if (Math.floor(num > 0)) { if (words != "") { words += "and "; } if (num < 20) { words += unitsMap[num]; } else { words += tensMap[Math.floor(num / 10)]; if ((num % 10) > 0) { words += "-" + unitsMap[Math.round(num % 10)]; } } } return words.trim(); } 

Answer 9

I was tasked with creating a WEB API that converts numbers to words using C #.

It can be an integer or decimal point within 48 hours.

The call will come from an external application using the Ajax Post method and return the converted result to the web page.

I publicly submitted this project to GitHub for the link: https://github.com/marvinglennlacuna/NumbersToWordsConverter.Api

With the following technical implementation:

• MVC structure
• API controller
• Service
• Model
• Error processing
• Testing devices using MSTest
• Code Coverage - 98%
• Jquery

And with technical documentation about the following:

• goal
• Background
• Function Requirements
• Process diagram and exit

** Result via web page (US-001) **

US-001 Converting numbers to words through a web page process

US-001 Converting numbers to words through web page output

Result Via Postman (US-002)

US-002 - Converting numbers to words through the postman process

US-002 - Converting numbers to words through Postman output

I think it's just worth sharing a working solution if you need it for reference in an interview / code testing / school or just for fun.

Cheers, Marvin

Answer 10

This class perfectly converts your float or double (up to 2 precision). Just copy and paste the IDE into your environment and see the result.

 class ConversionClass { private static Dictionary<int, string> InitialNumbers = new Dictionary<int, string>(); private static Dictionary<int, string> MultipleOfTen = new Dictionary<int, string>(); private static Dictionary<int, string> MultipleOfHundered = new Dictionary<int, string>(); private static void InitializeStatic() { //InitialNumbers.Add(0, "zero"); InitialNumbers.Add(1, "one"); InitialNumbers.Add(2, "two"); InitialNumbers.Add(3, "three"); InitialNumbers.Add(4, "four"); InitialNumbers.Add(5, "five"); InitialNumbers.Add(6, "six"); InitialNumbers.Add(7, "seven"); InitialNumbers.Add(8, "eight"); InitialNumbers.Add(9, "nine"); InitialNumbers.Add(10, "ten"); InitialNumbers.Add(11, "eleven"); InitialNumbers.Add(12, "tweleve"); InitialNumbers.Add(13, "thirteen"); InitialNumbers.Add(14, "fourteen"); InitialNumbers.Add(15, "fifteen"); InitialNumbers.Add(16, "sixteen"); InitialNumbers.Add(17, "seventeen"); InitialNumbers.Add(18, "eighteen"); InitialNumbers.Add(19, "nineteen"); MultipleOfTen.Add(1, "ten"); MultipleOfTen.Add(2, "twenty"); MultipleOfTen.Add(3, "thirty"); MultipleOfTen.Add(4, "fourty"); MultipleOfTen.Add(5, "fifty"); MultipleOfTen.Add(6, "sixty"); MultipleOfTen.Add(7, "seventy"); MultipleOfTen.Add(8, "eighty"); MultipleOfTen.Add(9, "ninety"); MultipleOfHundered.Add(2, "hundred"); // 100 MultipleOfHundered.Add(3, "thousand"); // 1 000 MultipleOfHundered.Add(4, "thousand"); // 10 000 MultipleOfHundered.Add(5, "thousand"); // 100 000 MultipleOfHundered.Add(6, "million"); // 1 000 000 MultipleOfHundered.Add(7, "million"); // 100 000 000 MultipleOfHundered.Add(8, "million"); // 1 000 000 000 MultipleOfHundered.Add(9, "billion"); // 1 000 000 000 000 } public static void Main() { InitializeStatic(); Console.WriteLine("Enter number :"); var userInput = Console.ReadLine(); double userValue ; if (double.TryParse(userInput, out userValue)) // userValue = 193524019.50 { int decimalPortion = (int)userValue; //var fractionPortion = Math.Ceiling(((userValue < 1.0) ? userValue : (userValue % Math.Floor(userValue))) * 100); int fractionPortion = (int)(userValue * 100) - ((int)userValue * 100); int digit; int power; StringBuilder numberInText = new StringBuilder(); while (decimalPortion > 0) { GetDigitAndPower(decimalPortion, out digit, out power); numberInText.Append(ConvertToText(ref decimalPortion, ref digit, ref power)); if (decimalPortion > 0) { decimalPortion = GetReminder(decimalPortion, digit, power); } } numberInText.Append(" point "); while (fractionPortion > 0) { GetDigitAndPower(fractionPortion, out digit, out power); numberInText.Append(ConvertToText(ref fractionPortion, ref digit, ref power)); if (fractionPortion > 0) { fractionPortion = GetReminder(fractionPortion, digit, power); } } Console.WriteLine(numberInText.ToString()); } Console.ReadKey(); } private static int GetReminder(int orgValue, int digit, int power) { int returningValue = orgValue - (digit * (int)Math.Pow(10, power)); return returningValue; } private static void GetDigitAndPower(int originalValue, out int digit, out int power) { for (power = 0, digit = 0; power < 10; power++) { var divisionFactor = (int)Math.Pow(10, power); int operationalValue = (originalValue / divisionFactor); if (operationalValue <= 0) { power = power - 1; digit = (int)(originalValue / Math.Pow(10, power)); break; } } } private static string ConvertToText(ref int orgValue, ref int digit, ref int power) { string numberToText = string.Empty; if (power < 2) { if (InitialNumbers.ContainsKey(orgValue)) { //This is for number 1 to 19 numberToText = InitialNumbers[orgValue]; orgValue = 0; } else if (MultipleOfTen.ContainsKey(digit)) { //This is for multiple of 10 (20,30,..90) numberToText = MultipleOfTen[digit]; } } else { if (power < 4) { numberToText = string.Format("{0} {1}", InitialNumbers[digit], MultipleOfHundered[power]); } else { StringBuilder sb = new StringBuilder(); int multiplicationFactor = power / 3; int innerOrgValue = (int) (orgValue / Math.Pow(10, (multiplicationFactor * 3))); digit = innerOrgValue; var multiple = MultipleOfHundered[power]; power = power - ((int)Math.Ceiling(Math.Log10(innerOrgValue)) - 1); int innerPower = 0; int innerDigit = 0; while (innerOrgValue > 0) { GetDigitAndPower(innerOrgValue, out innerDigit, out innerPower); var text = ConvertToText(ref innerOrgValue, ref innerDigit, ref innerPower); sb.Append(text); sb.Append(" "); if (innerOrgValue > 0) { innerOrgValue = GetReminder(innerOrgValue, innerDigit, innerPower); } } sb.Append(multiple); numberToText = sb.ToString(); } } return numberToText + " "; } } 

Answer 11

Although this is an old question, I implemented this functionality with a more detailed approach

 public static class NumberToWord { private static readonly Dictionary<long, string> MyDictionary = new Dictionary<long, string>(); static NumberToWord() { MyDictionary.Add(1000000000000000, "quadrillion"); MyDictionary.Add(1000000000000, "trillion"); MyDictionary.Add(1000000000, "billion"); MyDictionary.Add(1000000, "million"); MyDictionary.Add(1000, "thousand"); MyDictionary.Add(100, "hundread"); MyDictionary.Add(90, "ninety"); MyDictionary.Add(80, "eighty"); MyDictionary.Add(70, "seventy"); MyDictionary.Add(60, "sixty"); MyDictionary.Add(50, "fifty"); MyDictionary.Add(40, "fourty"); MyDictionary.Add(30, "thirty"); MyDictionary.Add(20, "twenty"); MyDictionary.Add(19, "nineteen"); MyDictionary.Add(18, "eighteen"); MyDictionary.Add(17, "seventeen"); MyDictionary.Add(16, "sixteen"); MyDictionary.Add(15, "fifteen"); MyDictionary.Add(14, "fourteen"); MyDictionary.Add(13, "thirteen"); MyDictionary.Add(12, "twelve"); MyDictionary.Add(11, "eleven"); MyDictionary.Add(10, "ten"); MyDictionary.Add(9, "nine"); MyDictionary.Add(8, "eight"); MyDictionary.Add(7, "seven"); MyDictionary.Add(6, "six"); MyDictionary.Add(5, "five"); MyDictionary.Add(4, "four"); MyDictionary.Add(3, "three"); MyDictionary.Add(2, "two"); MyDictionary.Add(1, "one"); MyDictionary.Add(0, "zero"); } /// <summary> /// To the verbal. /// </summary> /// <param name="value">The value.</param> /// <returns></returns> public static string ToVerbal(this int value) { return ToVerbal((long) value); } /// <summary> /// To the verbal. /// </summary> /// <param name="value">The value.</param> /// <returns></returns> public static string ToVerbal(this long value) { if (value == 0) return MyDictionary[value]; if (value < 0) return $" negative {ToVerbal(Math.Abs(value))}"; var builder = new StringBuilder(); for (var i = 1000000000000000; i >= 1000; i = i/1000) value = ConstructWord(value, builder, i); value = ConstructWord(value, builder, 100); for (var i = 90; i >= 20; i = i - 10) value = ConstructWordForTwoDigit(value, builder, i); if (MyDictionary.ContainsKey(value)) builder.AppendFormat("{0}" + MyDictionary[value], builder.Length > 0 ? " " : string.Empty); return builder.ToString(); } private static long ConstructWord(long value, StringBuilder builder, long key) { if (value >= key) { var unit = (int) (value/key); value -= unit*key; builder.AppendFormat(" {0} {1} " + MyDictionary[key], builder.Length > 0 ? ", " : string.Empty, ToVerbal(unit)); } return value; } private static long ConstructWordForTwoDigit(long value, StringBuilder builder, long key) { if (value >= key) { value -= key; builder.AppendFormat(" {0} " + MyDictionary[key], builder.Length > 0 ? " " : string.Empty); } return value; } } 

FYI: I have a custom string interpolation that is only available in 4.6.1

Answer 12

A solution that takes less code.

The most important part is just a couple of lines:

 static Func<long, string> remainder = t => t > 0 ? " " + ToEN(t) : ""; public static string ToEN(this long val, double d = 20, long th = 20) { switch ((long)d) { case 20: return val >= d ? ToEN(val, 1e2) : en[val]; case 100: return val >= d ? ToEN(val, 1e3, 100) : en[val / 10 * 10] + remainder(val % 10); default: return val >= d ? ToEN(val, d * 1e3,(long)d) : ToEN(val / th) + " " + en[th] + remainder(val % th); } } 

Full code is available here https://dotnetfiddle.net/wjr4hF

Answer 13

The following C # console application code will take a monetary value of up to two decimal places and prints it in English. You can use it as a link to achieve your results.

  namespace ConsoleApplication2 { using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; class Program { static void Main(string[] args) { bool repeat = true; while (repeat) { string inputMonetaryValueInNumberic = string.Empty; string centPart = string.Empty; string dollarPart = string.Empty; Console.Write("\nEnter the monetary value : "); inputMonetaryValueInNumberic = Console.ReadLine(); inputMonetaryValueInNumberic = inputMonetaryValueInNumberic.TrimStart('0'); if (ValidateInput(inputMonetaryValueInNumberic)) { if (inputMonetaryValueInNumberic.Contains('.')) { centPart = ProcessCents(inputMonetaryValueInNumberic.Substring(inputMonetaryValueInNumberic.IndexOf(".") + 1)); dollarPart = ProcessDollar(inputMonetaryValueInNumberic.Substring(0, inputMonetaryValueInNumberic.IndexOf("."))); } else { dollarPart = ProcessDollar(inputMonetaryValueInNumberic); } centPart = string.IsNullOrWhiteSpace(centPart) ? string.Empty : " and " + centPart; Console.WriteLine(string.Format("\n\n{0}{1}", dollarPart, centPart)); } else { Console.WriteLine("Invalid Input.."); } Console.WriteLine("\n\nPress any key to continue or Escape of close : "); var loop = Console.ReadKey(); repeat = !loop.Key.ToString().Contains("Escape"); Console.Clear(); } } private static string ProcessCents(string cents) { string english = string.Empty; string dig3 = Process3Digit(cents); if (!string.IsNullOrWhiteSpace(dig3)) { dig3 = string.Format("{0} {1}", dig3, GetSections(0)); } english = dig3 + english; return english; } private static string ProcessDollar(string dollar) { string english = string.Empty; foreach (var item in Get3DigitList(dollar)) { string dig3 = Process3Digit(item.Value); if (!string.IsNullOrWhiteSpace(dig3)) { dig3 = string.Format("{0} {1}", dig3, GetSections(item.Key)); } english = dig3 + english; } return english; } private static string Process3Digit(string digit3) { string result = string.Empty; if (Convert.ToInt32(digit3) != 0) { int place = 0; Stack<string> monetaryValue = new Stack<string>(); for (int i = digit3.Length - 1; i >= 0; i--) { place += 1; string stringValue = string.Empty; switch (place) { case 1: stringValue = GetOnes(digit3[i].ToString()); break; case 2: int tens = Convert.ToInt32(digit3[i]); if (tens == 1) { if (monetaryValue.Count > 0) { monetaryValue.Pop(); } stringValue = GetTens((digit3[i].ToString() + digit3[i + 1].ToString())); } else { stringValue = GetTens(digit3[i].ToString()); } break; case 3: stringValue = GetOnes(digit3[i].ToString()); if (!string.IsNullOrWhiteSpace(stringValue)) { string postFixWith = " Hundred"; if (monetaryValue.Count > 0) { postFixWith = postFixWith + " And"; } stringValue += postFixWith; } break; } if (!string.IsNullOrWhiteSpace(stringValue)) monetaryValue.Push(stringValue); } while (monetaryValue.Count > 0) { result += " " + monetaryValue.Pop().ToString().Trim(); } } return result; } private static Dictionary<int, string> Get3DigitList(string monetaryValueInNumberic) { Dictionary<int, string> hundredsStack = new Dictionary<int, string>(); int counter = 0; while (monetaryValueInNumberic.Length >= 3) { string digit3 = monetaryValueInNumberic.Substring(monetaryValueInNumberic.Length - 3, 3); monetaryValueInNumberic = monetaryValueInNumberic.Substring(0, monetaryValueInNumberic.Length - 3); hundredsStack.Add(++counter, digit3); } if (monetaryValueInNumberic.Length != 0) hundredsStack.Add(++counter, monetaryValueInNumberic); return hundredsStack; } private static string GetTens(string tensPlaceValue) { string englishEquvalent = string.Empty; int value = Convert.ToInt32(tensPlaceValue); Dictionary<int, string> tens = new Dictionary<int, string>(); tens.Add(2, "Twenty"); tens.Add(3, "Thirty"); tens.Add(4, "Forty"); tens.Add(5, "Fifty"); tens.Add(6, "Sixty"); tens.Add(7, "Seventy"); tens.Add(8, "Eighty"); tens.Add(9, "Ninty"); tens.Add(10, "Ten"); tens.Add(11, "Eleven"); tens.Add(12, "Twelve"); tens.Add(13, "Thrteen"); tens.Add(14, "Fourteen"); tens.Add(15, "Fifteen"); tens.Add(16, "Sixteen"); tens.Add(17, "Seventeen"); tens.Add(18, "Eighteen"); tens.Add(19, "Ninteen"); if (tens.ContainsKey(value)) { englishEquvalent = tens[value]; } return englishEquvalent; } private static string GetOnes(string onesPlaceValue) { int value = Convert.ToInt32(onesPlaceValue); string englishEquvalent = string.Empty; Dictionary<int, string> ones = new Dictionary<int, string>(); ones.Add(1, " One"); ones.Add(2, " Two"); ones.Add(3, " Three"); ones.Add(4, " Four"); ones.Add(5, " Five"); ones.Add(6, " Six"); ones.Add(7, " Seven"); ones.Add(8, " Eight"); ones.Add(9, " Nine"); if (ones.ContainsKey(value)) { englishEquvalent = ones[value]; } return englishEquvalent; } private static string GetSections(int section) { string sectionName = string.Empty; switch (section) { case 0: sectionName = "Cents"; break; case 1: sectionName = "Dollars"; break; case 2: sectionName = "Thousand"; break; case 3: sectionName = "Million"; break; case 4: sectionName = "Billion"; break; case 5: sectionName = "Trillion"; break; case 6: sectionName = "Zillion"; break; } return sectionName; } private static bool ValidateInput(string input) { return Regex.IsMatch(input, "[0-9]{1,18}(\\.[0-9]{1,2})?")) } } } 

code>

Answer 14

, , . FYI, # 7.0 . , .

 public static class NumberExtensions { private const string negativeWord = "negative"; private static readonly Dictionary<ulong, string> _wordMap = new Dictionary<ulong, string> { [1_000_000_000_000_000_000] = "quintillion", [1_000_000_000_000_000] = "quadrillion", [1_000_000_000_000] = "trillion", [1_000_000_000] = "billion", [1_000_000] = "million", [1_000] = "thousand", [100] = "hundred", [90] = "ninety", [80] = "eighty", [70] = "seventy", [60] = "sixty", [50] = "fifty", [40] = "forty", [30] = "thirty", [20] = "twenty", [19] = "nineteen", [18] = "eighteen", [17] = "seventeen", [16] = "sixteen", [15] = "fifteen", [14] = "fourteen", [13] = "thirteen", [12] = "twelve", [11] = "eleven", [10] = "ten", [9] = "nine", [8] = "eight", [7] = "seven", [6] = "six", [5] = "five", [4] = "four", [3] = "three", [2] = "two", [1] = "one", [0] = "zero" }; public static string ToWords(this short num) { var words = ToWords((ulong)Math.Abs(num)); return num < 0 ? $"{negativeWord} {words}" : words; } public static string ToWords(this ushort num) { return ToWords((ulong)num); } public static string ToWords(this int num) { var words = ToWords((ulong)Math.Abs(num)); return num < 0 ? $"{negativeWord} {words}" : words; } public static string ToWords(this uint num) { return ToWords((ulong)num); } public static string ToWords(this long num) { var words = ToWords((ulong)Math.Abs(num)); return num < 0 ? $"{negativeWord} {words}" : words; } public static string ToWords(this ulong num) { var sb = new StringBuilder(); var delimiter = String.Empty; void AppendWords(ulong dividend) { void AppendDelimitedWord(ulong key) { sb.Append(delimiter); sb.Append(_wordMap[key]); delimiter = 20 <= key && key < 100 ? "-" : " "; } if (_wordMap.ContainsKey(dividend)) { AppendDelimitedWord(dividend); } else { var divisor = _wordMap.First(m => m.Key <= dividend).Key; var quotient = dividend / divisor; var remainder = dividend % divisor; if (quotient > 0 && divisor >= 100) { AppendWords(quotient); } AppendDelimitedWord(divisor); if (remainder > 0) { AppendWords(remainder); } } } AppendWords(num); return sb.ToString(); } } 

ToWords .