doubleの最大値

MaxAndMinValue.cs

using System;
using System.Numerics;
public class MaxAndMinValue {
  public static void Main() {
    BigInteger i = (BigInteger)double.MaxValue;
    string j = i.ToString();
    int k = j.Length - 1;
    double l = int.Parse(j[0].ToString()) + (double)int.Parse(j[1].ToString())/10;
    string m = (l == 1) ? "" : l + "*";
    Console.WriteLine("double.MaxValue = {0}{1}≒ {2}10^{3}", i, Environment.NewLine, m, k);
  }
}