private static string IntToWord(string str)
{
string[] scale = new string[] { string.Empty, "Thousand", "Million", "Billion", "Trillion", "Quadrillion", "Quintillion" };
List <string> word = new List <string>();
List <string> num = NumberToWordExtensionMethods.SplitString(str, 3);
for (int i = 0; i < num.Count; i++)
{
string numEng = NumberToWordExtensionMethods.NumToEng(num[i]) + ((scale[i] != string.Empty) ? string.Format(" {0}", scale[i]) : string.Empty);
word.Add(numEng);
}
string[] result = word.ToArray();
Array.Reverse(result);
return(string.Join(" ", result));
}
private static string NumToEng(string str)
{
string[] small = new string[] { string.Empty, "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" };
string[] teens = new string[] { "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" };
string[] tens = new string[] { string.Empty, string.Empty, "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" };
string result = string.Empty;
if (str.Length == 2)
{
if (str.Substring(1, 1) == "1")
{
result = teens[int.Parse(str.Substring(0, 1))];
}
else
{
string one = small[int.Parse(str.Substring(0, 1))];
result = tens[int.Parse(str.Substring(1, 1))] + ((one != string.Empty) ? string.Format(" {0}", one) : string.Empty);
}
}
else
{
if (str.Length == 3)
{
string three = small[int.Parse(str.Substring(2))];
string two = NumberToWordExtensionMethods.NumToEng(str.Substring(0, 2));
result = ((three != string.Empty) ? string.Format("{0} Hundred", three) : string.Empty) + ((two != string.Empty) ? string.Format(" and {0}", two) : string.Empty);
}
else
{
result = small[int.Parse(str)];
}
}
return(result);
}
