One time pad, encryption and decryption

Question

I am trying to pick up cryptography and had been trying this exercise

Write a program (preferably Java) to generate a one-time pad, which is a relatively large file

Answer 1

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

namespace one_time_pad
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("                   TRYING\n");

            Console.WriteLine("Enter : ");
            int input= int.Parse( Console.ReadLine());

            //random num generation
            Random rnd = new Random();
            int random = rnd.Next(1,10);

            //binary conversion
            string binary = Convert.ToString(random,2);
            string inbinary = Convert.ToString(input,2);

            Console.WriteLine("Data :   " +input +"   Binary :   " + inbinary);
            Console.WriteLine(" Key :   " +random + "   Binary :    " + binary);    

            // taking xor
            int Ghul = input ^ random;

            //binary conversion
            string intcon = Convert.ToString(Ghul,2);

            Console.WriteLine("Encrypted : " + intcon);

            Console.WriteLine(":)");

            Console.Read();    
        }
    }
}