using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int B,n,i,x;
float A, C;

C = 0;
A = 1;
B = 1;
n = 0;
x = 1;

while (A / B > 0.00001)
{
C = C + A / B;
n = n + 1;
for (i = 0,A=1; i < n; i++)
A = A * x;

for (i = 1,B=1; i <= n; i++)
B = B * i;

}
Console.WriteLine(C);
Console.Read();
}
}
}


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