自己写的using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace 循环{
class Program
{
static void Main(string[] args)
{
int i;
double sum = 1.0;
string output = " ";
for (i = 1; i <= 99; i++)
sum +=(double ) i / (i + 1);
output =String.Format("{0 :N5}" ,sum);
Console.WriteLine(output );
}
}}