{filelink=20046}

using System;
using System.Numerics;
using System.Globalization;
public class FormatBigInt
{
   public static void Main()
   {
        NumberFormatInfo fmtNum = new NumberFormatInfo();
        fmtNum.NegativeSign = "~";

        BigInteger number = BigInteger.Parse("~9999999999999", fmtNum);
        Console.WriteLine(number.ToString(fmtNum));
        Console.WriteLine(number);
   }
}