Adv2018/D1.1/Program.cs

using System;
using System.IO;

namespace Adv2018
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length < 1) return;

            var file = File.OpenText(args[0]);

            int frequency = 0;

            do
            {
                var line = file.ReadLine();
                if (line == null) break;

                var freq = int.Parse(line);
                frequency += freq;

            } while (true);

            Console.WriteLine($"Result : {frequency}");
        }
    }
}