private static string ConvertNumberToWords(int number)
{
var hundreds = (number % 1000) / 100;
var tens = (number % 100) / 10;
var unity = number % 10;
var sb = new StringBuilder();
if (hundreds > 0)
{
sb.Append(ConverterHelper.ConvertDigitToWord(hundreds));
sb.Append($" {ConverterHelper.GetPowerName(2)} ");
}
if (tens == 0)
{
sb.Append(ConverterHelper.ConvertDigitToWord(unity));
}
else if (tens > 0 && tens < 2)
{
sb.Append(ConverterHelper.ConvertTensToWord(10 + unity));
}
else if (tens >= 2)
{
sb.Append(ConverterHelper.ConvertTensToWord(tens * 10));
sb.Append(unity > 0 ? "-" : string.Empty);
sb.Append(ConverterHelper.ConvertDigitToWord(unity));
}
return(sb.ToString().Trim());
}
public string ConvertCurrencyToWords(decimal value)
{
if (value == 0)
{
return(GetZeroDollars());
}
var words = new List <string>();
var wholeNumber = decimal.Truncate(value);
var fraction = (value - wholeNumber) * 100;
if (wholeNumber > 0)
{
var power = MaxPower;
while (power >= 0)
{
var partNumber = decimal.ToInt32(wholeNumber % (int)Math.Pow(10, power + 3) / (int)Math.Pow(10, power));
if (partNumber > 0)
{
words.Add(ConvertNumberToWords(partNumber));
words.Add(ConverterHelper.GetPowerName(power));
}
power -= 3;
}
var currency = wholeNumber == 1 ? ConverterHelper.CurrencyName : ConverterHelper.CurrencyNamePlural;
words.Add(currency);
}
if (fraction > 0)
{
if (words.Count > 0)
{
words.Add("and");
}
words.Add(ConvertNumberToWords((int)fraction));
var currencyCent = fraction == 1 ? ConverterHelper.CurrencyCentName : ConverterHelper.CurrencyCentPlural;
words.Add(currencyCent);
}
var result = string.Join(" ", words.Where(w => !string.IsNullOrEmpty(w)));
return(result);
}
