求1+1/n的累加和

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication3{    class Program    {        static void Main(string[] args)        {            double n = 1, sum = 0;            while (n<=100000)            {                sum += 1.0 / n;                n++;            }            Console.WriteLine("n:{0},累加和为：{1}", n, sum);            Console.Read();        }    }}