Number series program (1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n) by parijat

Number series program (1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n) by parijat :

Number series:

using System;

namespace patternProblem.Number

{

    class Number2

    {

        static void Main(string[] args)

        {

            Console.WriteLine("Given series is:");

            Console.WriteLine("(1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n) ");

            Console.WriteLine("----------------------------");

            Console.WriteLine();

            Console.WriteLine("Enter value of n: ");

            int n = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine();

            int sum = 0;

            Console.WriteLine("-----Output-----");

            Console.WriteLine();

            for (int i = 1; i <= n; i++)

            {

                sum = sum + (i * i);

            }

            Console.WriteLine("Sum of series: " + sum);

            Console.ReadKey();

        }

    }

}