SOME COMPUTER STUFF ON C,JAVA,TALLY,BCA,SOLVED PAPERS

using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication6 {     class Program     {         public static string s = "",s2="";         public static int i = 0;         static void Main(string[] args)         {             int ch = 1;             while (ch == 1 || ch == 2)             {                 Console.WriteLine("Enter 1 for cipher "+"\n"+"Enter 2 for decipher ");                 ch = Convert.ToInt32(Console.ReadLine());                 if (ch == 1)                     cipher();                 else   ...