میانگین(Average)

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

namespace Average
{
    class Program
    {
        static void Main(string[] args)
        {
            string a;
            string b;
            string c;
            Console.WriteLine("a&b&c:");
            a = Console.ReadLine();
            b = Console.ReadLine();
            c = Console.ReadLine();
            float a1 = Int32.Parse(a);
            float b1 = Int32.Parse(b);
            float c1 = Int32.Parse(c);
            float d = (a1 + b1 + c1) / 3;
            Console.WriteLine("Result:" + d.ToString());
            Console.ReadLine();
        }
    }
}