using System;

public class Program

{

    public static void Main()

    {

        int[] ids = new int[] { 6, 7, 8, 10 };

​

        //

        // Use do-while loop to sum numbers in 4-element array.

        //

        int sum = 0;

        int i = 0;

        do

        {

            sum += ids[i];

            i++;

        } while (i < 4);

​

        System.Console.WriteLine(sum);

    }

}