import java.io.*;
import java.util.*;

class DepositAccountMain6
// Version of DepositAccountMain5 with bug fixed:
// can't deposit or withdraw negative amount
{
 public static void main(String[] args) throws IOException
 {
  BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
  int sum;
  double interest;
  while(true) try
     {
      System.out.print("Initial deposit: ");
      sum = Integer.parseInt(in.readLine());
      if(sum<=0)
         System.out.println("Cannot deposit non-positive amount");
      else
         break;
     }
  catch(NumberFormatException e)
     {
      System.out.println("Not a valid figure");
     }
  while(true) try
     {
      System.out.print("Interest rate%: ");
      interest = Double.parseDouble(in.readLine())/100;
      break;
     }
  catch(NumberFormatException e)
     {
      System.out.println("Not a valid figure");
     }
  DepositAccountB acc = new DepositAccountB(sum,interest);
  char command;
  do {
      StringTokenizer line;
      String num;
      do {
          System.out.print("Command: ");
          line = new StringTokenizer(in.readLine());
         }
      while(!line.hasMoreTokens());
      command = line.nextToken().charAt(0);
      switch(command)
         {
         case 'b':
            System.out.println("Balance is "+acc.balance());
            break;
         case 'n':
            acc.update();
            System.out.println("Start month with "+acc.balance());
            break;
         case 'd':
            num=line.hasMoreTokens()?line.nextToken():"";
            while(true) try
               {
                while(num.equals(""))
                   {
                    System.out.print("Enter amount: ");
                    num=in.readLine();
                   }
                sum=Integer.parseInt(num);
                if(sum<=0)
                   {
                    System.out.println("Cannot deposit non-positive amount");
                    num="";
                   }
                else
                   {
                    acc.deposit(sum);
                    break;
                   }
               }
            catch(NumberFormatException e)
               {
                System.out.println("Not a valid figure");
                num="";
               }
            break;
         case 'w':
            num=line.hasMoreTokens()?line.nextToken():"";
            while(true) try
               {
                while(num.equals(""))
                   {
                    System.out.print("Enter amount: ");
                    num=in.readLine();
                   }
                sum=Integer.parseInt(num);
                if(sum<=0)
                   {
                    System.out.println("Cannot withdraw non-positive amount");
                    num="";
                   }
                else
                   {
                    acc.withdraw(Integer.parseInt(num));
                    break;
                   }
               }
            catch(NumberFormatException e)
               {
                System.out.println("Not a valid figure");
                num="";
               }
            catch(AccountException e)
               {
                System.out.print("Withdrawal refused: ");
                if(e.getMessage().equals("overdraw"))
                   System.out.println("would make account overdrawn");
                else
                   System.out.println("previous withdrawal this month");
                break;
               }
            break;
         case 'q':
            break;
         default:
            System.out.println("Invalid command");
         }
     }
  while(command!='q');
 }
}