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Ruby Ruby Objects and Classes Build a Bank Account Class Printing The BankAccount

Posted by John McBride
John McBride
Courses Plus Student 3,751 Points

I think the answer is as below: def to_s puts "Name: " + @name + ", Balance: " + balance end

I don't know why my answer is not working

bank_account.rb 
class BankAccount
  attr_reader :name

  def initialize(name)
    @name = name
    @transactions = []
    add_transaction("Beginning Balance", 0)
  end

  def balance
    balance = 0
    @transactions.each do |transaction|
      balance += transaction[:amount]
    end
    balance
  end

  def debit(description, amount)
    add_transaction(description, -amount)
  end

  def credit(description, amount)
    add_transaction(description, amount)
  end

  def add_transaction(description, amount)
    @transactions.push(description: description, amount: amount)
  end

  def to_s
    puts "Name: " + @name + ", Balance: " + balance
  end

end

1 Answer

Jay McGavren
STAFF
Jay McGavren
Treehouse Teacher
Jay McGavren
Jay McGavren
Treehouse Teacher

There are two issues with this code.

The balance method returns an Integer value. Numeric values can't be concatenated with strings:

puts "hi" + 2 # in `+': no implicit conversion of Fixnum into String (TypeError)

But if you use string interpolation, a numeric value can be substituted into a string:

puts "hi #{2}"

Try updating your to_s method to use string interpolation.

The second issue is that to_s needs to return a string value, not print it. Don't call puts, just have to_s return the string you create. See this video for more info.