using System;

public class Program

{

    public static void Main()

    {

               int i,b,t,n,r,k=0;

        double sum=0;

            Console.WriteLine("Enter a integer:");

            n=Convert.ToInt32(Console.ReadLine());

            t=n;

            while(n!=0)

            {

                n=n/2;

                k++;

            }

            int [] a=new int[k];

           for(i=0;i<=k-1;i++)

            {

                r=t%2;

                a[i]=r;

                t=t/2;

            }

            for(i=k-1;i>=0;i--)

            {

                Console.WriteLine("{0}",a[i]);

            }

          Console.WriteLine("Enter a value between 0 to {0}",k-1);  

        b=Convert.ToInt32(Console.ReadLine());

        for(i=k-1;i>=0;i--)

        {

            if(i!=b)

            { 

                if(a[i]==0)

                {

                     a[i]=1;

                }

                else

                {

                if(a[i]==1)

                {

                    a[i]=0;

                }

                }       

            }   

        }

        for(i=k-1;i>=0;i--)

        {

            Console.WriteLine("{0}",a[i]);

        }

        for(i=k-1;i>=0;i--)

        {

            Math.Pow(2,i);

             sum=sum+Math.Pow(2,i)*a[i];

        }

        Console.WriteLine("integer={0}",sum); 

    }

​

}