using System; using System.IO; namespace JiaMi { public class main { public static void Main(string[] args) { string[] all_text = new string[1000000]; int line = 0; Console.WriteLine("Please input the address:"); string address = Console.ReadLine(); try { using(StreamReader fin = new StreamReader(address)) { string text; while ((text = fin.ReadLine()) != null) { all_text[line] = text; line++; } } Console.WriteLine("Read successfully!"); }catch(Exception error) { Console.WriteLine(error.Message); } try { using(StreamWriter fout = new StreamWriter(address)) { for (int i = 0; i < line; i++) { for (int j = 0; j < all_text[i].Length; j++) { char ch = all_text[i][j]; if ((ch >= 'a' && ch < 'z')||(ch >= 'A' && ch < 'Z')) { ch = Convert.ToChar(ch+'b'-'a'); }else if (ch == 'z') { ch = 'a'; }else if (ch == 'Z') { ch = 'A'; } fout.Write(ch); } fout.WriteLine(); } } Console.WriteLine("Write successfully!"); }catch(Exception error) { Console.WriteLine(error.Message); } Console.Write("Press any key to continue..."); Console.ReadKey(); return; } } }