C# ta Vize Final Hesabı

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication42
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("vize notonu giriniz :");
            int vize = Convert.ToInt32(Console.ReadLine());
            Console.Write("final notonu giriniz :");
            int final = Convert.ToInt32(Console.ReadLine());
           double sonuc = (vize * 0.4)+(final*0.6);
            Console.WriteLine("sonuç : "+(int)sonuc);
        }
    }
}