Introduction

After looking around the web for this functionality and failing to get an answer to my problem. I decided to spare some minutes and develop this functionality up to my requirement.

I've decided to share with developers out who may require it.

The program accepts numbers/numeric values as input and outputs an an English word representation.It accepts numbers ranging from 1 to some billions.

Here is the Class code:

public class NumberToEnglish
{
public NumberToEnglish() { }

public String changeNumericToWords(double numb)
{

String num = numb.ToString();

return changeToWords(num, false);

}

public String changeCurrencyToWords(String numb)
{

return changeToWords(numb, true);

}

public String changeNumericToWords(String numb)
{

return changeToWords(numb, false);

}

public String changeCurrencyToWords(double numb)
{

return changeToWords(numb.ToString(), true);

}

private String changeToWords(String numb, bool isCurrency)
{

String val = "", wholeNo = numb, points = "", andStr = "", pointStr = "";

String endStr = (isCurrency) ? ("Only") : ("");

try
{

int decimalPlace = numb.IndexOf(".");

if (decimalPlace > 0)
{

wholeNo = numb.Substring(0, decimalPlace);

points = numb.Substring(decimalPlace + 1);

if (Convert.ToInt32(points) > 0)
{

andStr = (isCurrency) ? ("and") : ("point");// just to separate whole numbers from points/cents

endStr = (isCurrency) ? ("Cents " + endStr) : ("");

pointStr = translateCents(points);

}

val = String.Format("{0} {1}{2} {3}", translateWholeNumber(wholeNo).Trim(), andStr, pointStr, endStr);

}

catch { ;}

return val;

}

private String translateWholeNumber(String number)
{

string word = "";

try
{

bool beginsZero = false;//tests for 0XX

bool isDone = false;//test if already translated

double dblAmt = (Convert.ToDouble(number));

//if ((dblAmt > 0) && number.StartsWith("0"))

if (dblAmt > 0)
{//test for zero or digit zero in a nuemric

beginsZero = number.StartsWith("0");

int numDigits = number.Length;

int pos = 0;//store digit grouping

String place = "";//digit grouping name:hundres,thousand,etc...

switch (numDigits)
{

case 1://ones' range

word = ones(number);

isDone = true;

break;

case 2://tens' range

word = tens(number);

isDone = true;

break;

case 3://hundreds' range

pos = (numDigits % 3) + 1;

place = " Hundred ";

break;

case 4://thousands' range

case 5:

case 6:

pos = (numDigits % 4) + 1;

place = " Thousand ";

break;

case 7://millions' range

case 8:

case 9:

pos = (numDigits % 7) + 1;

place = " Million ";

break;

case 10://Billions's range

pos = (numDigits % 10) + 1;

place = " Billion ";

break;

//add extra case options for anything above Billion...

default:

isDone = true;

break;

}

if (!isDone)
{//if transalation is not done, continue...(Recursion comes in now!!)

word = translateWholeNumber(number.Substring(0, pos)) + place + translateWholeNumber(number.Substring(pos));

//check for trailing zeros

if (beginsZero) word = " and " + word.Trim();

}

//ignore digit grouping names

if (word.Trim().Equals(place.Trim())) word = "";

}

catch { ;}

return word.Trim();

}

private String tens(String digit)
{

int digt = Convert.ToInt32(digit);

String name = null;

switch (digt)
{

case 10:

name = "Ten";

break;

case 11:

name = "Eleven";

break;

case 12:

name = "Twelve";

break;

case 13:

name = "Thirteen";

break;

case 14:

name = "Fourteen";

break;

case 15:

name = "Fifteen";

break;

case 16:

name = "Sixteen";

break;

case 17:

name = "Seventeen";

break;

case 18:

name = "Eighteen";

break;

case 19:

name = "Nineteen";

break;

case 20:

name = "Twenty";

break;

case 30:

name = "Thirty";

break;

case 40:

name = "Fourty";

break;

case 50:

name = "Fifty";

break;

case 60:

name = "Sixty";

break;

case 70:

name = "Seventy";

break;

case 80:

name = "Eighty";

break;

case 90:

name = "Ninety";

break;

default:

if (digt > 0)
{

name = tens(digit.Substring(0, 1) + "0") + " " + ones(digit.Substring(1));

}

break;

}

return name;

}

private String ones(String digit)
{

int digt = Convert.ToInt32(digit);

String name = "";

switch (digt)
{

case 1:

name = "One";

break;

case 2:

name = "Two";

break;

case 3:

name = "Three";

break;

case 4:

name = "Four";

break;

case 5:

name = "Five";

break;

case 6:

name = "Six";

break;

case 7:

name = "Seven";

break;

case 8:

name = "Eight";

break;

case 9:

name = "Nine";

break;

}

return name;

}

private String translateCents(String cents)
{

String cts = "", digit = "", engOne = "";

for (int i = 0; i < cents.Length; i++)
{

digit = cents[i].ToString();

if (digit.Equals("0"))
{

engOne = "Zero";

}

else
{

engOne = ones(digit);

}

cts += " " + engOne;

}

return cts;

}

How to convert a numeric value or currency to English words using C#

Introduction

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