using System;

namespace U4L2Labs

{

    internal class Program

    {

        static void Main(string[] args)

        {

            int sum1 = Sum(5, 3);

            int sum2 = Sum(1, 2, 3, 4, 5);

            int sum3 = Sum(10, 20, 30, 40, 50, 60);

            Console.WriteLine($"{sum1} {sum2} {sum3}");

        }

​

        static int Sum(params int[] nums)

        {

            int sum = 0;

            foreach (int num in nums)

            {

                sum += num;

            }

            return sum;

        }

    }

}

​