/*
 * C# Program to Generate the Sum of N Numbers
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace program
{
class Program
{
    static void Main(string[] args)
    {
        int i, sum = 0,n;
        Console.Write("Enter the Nth Number : ");
        n = int.Parse(Console.ReadLine());
        for (i = 0; i <= n; i++)
            {
                sum = sum + i;
            }
        Console.WriteLine("\nSum of N Numbers : " + sum);
        Console.ReadLine();
    }
}
}

/*
Enter the Nth Number : 10
Sum of N Numbers : 55