import java.io.*;
class PromptAndEcho{
 public static void main(String args[])
  throws IOException{
   if(args.length()<1){
    System.err.println("java Prompt And Echo <output file>");
    return;}
    
    BufferedReader stdin=new BufferedReader(new InputStreamReader(System.in));
    PrintWriter pw=new PrintWriter(new FileOutputStream(args[0]));
    while(true){
     System.out.print("input>");
     String s=stdin.readLine();
     if(s.equalsLgnoreCase("exit"))
     break;
     System.out.println(s);
     pw.println(s);}
     pw.close();
     stdin.close();
    }
  }
  

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