Decimal Precision Sum (Exercise)

using System;
using System.Collections.Generic;
using System.Linq;

namespace ConsoleTesting
{
    class ConsoleTesting
    {
        static void Main()
        {
            decimal sum = 1;
            decimal precision = 0.001M;
            for (int i = 0, j = 2; i < Int32.MaxValue; i++,j++)
            {
                if (i % 2 != 0)
                {
                    decimal temp = (decimal)1 / j;
                    if (temp < precision)
                    {
                        Console.WriteLine(sum.ToString("N3"));
                        return;
                    }
                    else
                    {
                        sum -= temp;
                    }
                }
                else
                {
                    decimal temp = (decimal)1 / j;
                    if (temp < precision)
                    {
                        Console.WriteLine(sum.ToString("N3"));
                        return;
                    }
                    else
                    {
                        sum += temp;
                    }
                }

            }
        }
    }
}