Write a program that Calculate the value of π
from the infinite series
Print a table that shows the value of π approximated
by one term of this series, by two terms, by three
terms, and so on.

Output:
Accuracy set at: 40
term pi
1 4.000000
2 2.666667
3 3.466667
4 2.895238
5 3.339683
6 2.976046
7 3.283738
8 3.017072
...
...
...
40 3.116597

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace picalc

{

    class Program

    {

        static void Main(string[] args)

        {

            int accuracy;

            double piValue = 0;

            double numerator = 4.0;

            double denominator = 1.0;

            Console.Write("Enter the number of terms:");

            accuracy = Convert.ToInt32(Console.ReadLine());

            int i;

            Console.WriteLine("Term \t\tPi");

            for (i = 1; i <= accuracy; i++)

            {

                double x = (numerator / denominator);

                if ((i % 2) == 0)

                {

                    piValue -= x;

                }

                else

                {

                    piValue += x;

                }

                denominator += 2.0;

                Console.WriteLine("{0}\t\t{1:F16}", i, piValue);       

            }

            Console.ReadLine();

      }

    }

}