From: Learning Ruby <learningruby@...>
Date: 2006-11-03T22:09:49+09:00
Subject: Output not clear

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I am a newbie to Ruby and the output of the following program is not clear
to me.

The program is:

class Accounts
  attr_accessor :balance

  def initialize(name, phone, op_balance)
    @name = name
    @phone = phone
    @balance = op_balance
  end

  def deposit(amt)
    @balance += amt
    puts @balance.to_s
  end
end

class Savings<Accounts
  def initialize(name, phone, op_balance)
    super
  end

  def withdraw(amt)
    @bal = balance
    if ((@bal - amt) > 500.00)
      balance = @bal - amt
      puts balance.to_s
    else
      puts 'No Balance'
    end
  end
end

s = Savings.new('Pete',65241884,5000.00)
s.deposit(500.00)
s.withdraw(200.00)
puts s.balance.to_s

The output I get is:

>ruby accounts.rb
5500.0
5300.0
5500.0
>Exit code: 0

I thought that the last line puts s.balance.to_s would have displayed 5300.0.
Why is this 5500.0 ?

All help appreciated.

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