用c#中for循环来计算数列1+1/2+2/3+...+99/100之和

class Program
{
static void Main(string[] args)
{
double answer = 1.0;
for (int i = 2; i < 101; i++)
{
answer += Convert.ToDouble(i - 1) / Convert.ToDouble(i);
}
Console.WriteLine(answer);
Console.ReadKey();
}
}