/******************************************************/
/* Introduction to Programming                        */
/* By Dr. ANTF                                        */
/* www.antf.net                                       */
/* Copyright 2015                                     */
/*                                                    */
/* C# 321 - Problem 20: Binary to Decimal             */
/******************************************************/

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

namespace DOS
{
    class Program
    {
        static void Main(string[] args)
        {
            int bin, sum = 0, counter = 0, power;
            Console.Write("Please entere a binary number: ");
            bin = int.Parse(Console.ReadLine());

            while(bin != 0)
            {
                //get the power of 2
                power = 1;
                for (int i = 0; i < counter; i++) power = power * 2;

                sum = sum + (power * (bin % 10));
                bin = bin / 10;

                //increment the couter
                counter++;
            }

            Console.WriteLine("\n\nThe decimal value is: {0}", sum);
            Console.ReadKey();
        }
    }
}