using System;

public class Program

{

    static int sumArray(int[] arr)

    {

        int sum=0;

        for(int i=0;i<arr.Length;i++)

            sum=sum +arr[i];  // sum+=arr[i];

        return sum;

    }

    public static void Main()

    {

        int i;

        int[] arr= new int [7]; 

        for(i=0;i<arr.Length;i++)

        {

            Console.WriteLine("Enter a number");

            arr[i]=int.Parse(Console.ReadLine());

        }

        Console.WriteLine("The sum of the elements is: {0}",sumArray(arr));

    }

}

​