我已经创建了一个自动柜员机几天了，并且最近在尝试让课程运行时遇到了这个错误，我明白<top (required)>'意味着有一些事情发生在顶部文件，但我似乎无法找到任何问题，有人可以向我解释这里的问题是什么，以及我应该如何修复它？
main.rb来源：
#!/usr/bin/env ruby
################
#ATM Rewrite
#
#Creator Lost Bam
#
#11/19/15
##################
require_relative 'initialize.rb'
require_relative 'checking.rb'
require_relative 'savings.rb'
require_relative 'transfer.rb'
require_relative 'loan.rb'
require_relative './ready/exit.rb'#if you're gonna run the file take the './ready' off of this one`
require_relative './ready/redirect.rb'# and this one
class ATM
attr_accessor :name, :checking_account, :savings_account, :pin_number, :transfer, :loan
def initialize( name, checking_account, savings_account, pin_number )
@name = name
@checking_account = checking_account
@savings_account = savings_account
@pin_number = pin_number
end
end
def pin #add regex =~ /^\d{4}/ to compare against input of user for a 4 digit combination
x = 3
while (x > 0) do
puts "Enter PIN(#{x} attempts left):"
pin_num = gets.chomp
case pin_num.to_i
when @pin_number
menu
else
puts "Invalid PIN"
x -= 1
bad_pin if x == 0
end
end
end
def menu
puts <<-END.gsub(/^\s*>/, ' ')
>
>Welcome #{name} thank you for choosing Bank of Bam.
>You may choose from the list below of what you would like to do
>For checking inquiries press '1'
>For savings account information press '2'
>To transfer funds press '3'
>To either apply for a loan, or get information on a loan press '4'
>To exit the system press '5'
>
END
input = gets.chomp
case input.to_i
when 1
checking_information
when 2
savings_information
when 3
transfer_funds
when 4
loan_info
when 5
exit_screen
else
puts "Error Invalid option please try again"
menu
end
end
def bad_pin
abort('Exiting system, all attempts failed...')
exit
end
initialize.rb source（我正在测试运行的地方）
my_acc = ATM.new("Thomas", 700, 700, 1234)
my_acc.pin #also attempted using other methods no success
checking.rb来源：
private
def checking_information
puts <<-END.gsub(/^\s*>/, ' ')
>
>Your current balance is: #{@checking_account}
>Deposit funds '1'
>Make a withdrawl '2'
>Go back '3'
>
END
input = gets.chomp
case input.to_i
when 1
deposit
when 2
withdrawl
when 3
redirect
else
puts "Invalid option"
checking_information
end
end
def deposit
puts "Enter amount to deposit:"
amount = gets.chomp.to_i
@checking_account += amount.to_f
puts "Your new balance is #{@checking_account}"
puts "Would you like make another deposit?"
input = gets.chomp
if input == /yes/i
deposit
else
redirect
end
end
def withdrawl
puts "Your current balance is #{@checking_account}. Please enter amount to withdrawl:"
input = gets.chomp.to_i
@checking_account -= input.to_f
puts "Your new balance is #{@checking_account}"
puts "Would you like to make another withdrawl?"
if input == /yes/i
withdrawl
else
redirect
end
end
Savings.rb和transfer.rb不完整（甚至还没有开始），所以没有必要展示它们。
loan.rb来源：
private
class Loan
attr_accessor :credit
def initialize( score )
@score = 0
end
end
def loan_info
puts <<-END.gsub(/^\s*>/, ' ')
>
>Hello and welcome to the credit station
>Please choose from the list below
>Would you like to Apply for a loan '1'
>Check credit score '2'
>Go back '3'
>
END
input = gets.chomp
case input.to_i
when 1
apply_credit
when 2
check_score
else
redirect
end
end
def apply_credit
if @score >= 640
accepted
else
denied_loan
end
end
def accepted
loan = %w(100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000 4100 4200 4300 4400 4500 4600 4700 4800 4900 5000)
loan_amount = loan.sample
puts "You have been accepted for a #{loan_amount} loan which will be added to your bank account"
puts <<-END.gsub(/^\s*>/, ' ')
>
>Which account would you like to add that to?
>Checking Account '1'
>Savings Account '2'
>
END
input = gets.chomp
case input.to_i
when 1
@checking_account += loan_amount
puts "#{loan_amount} has been added to your checking account, your new balance is #{@checking_account}"
puts "Your card will now be returned for security purposes."
exit_screen
when 2
@savings_account += loan_amount #Not completed yet..
puts "#{loan_amount} has been added to your savings account, your new balance is #{@savings_account}"
puts "Your card will now be returned for security purposes"
exit_screen
end
end
redirect.rb和exit.rb source：
def redirect
puts <<-END.gsub(/^\s*>/, ' ')
>
>Please choose from the list below
>Main menu '1'
>Checking inquiries '2'
>Savings account information '3'
>Transfer funds '4'
>Apply or view a loan '5'
>Return card and exit system '6'
>
END
input = gets.chomp
case input.to_i
when 1
menu
when 2
checking_information
when 3
savings_information
when 4
transfer_funds
when 5
loan_info
when 6
exit_screen
else
puts "Invalid input"
redirect
end
end
----------
def exit_screen
puts "Returning card.."
puts "Thank you for choosing Bank of Bam, have a nice day!"
exit
end
更新
嗯我被建议更改名称并从初始化文件中要求main，所以我做了和BOOM相同的错误，但这次它添加了一些东西：
`<top (required)>': private method `pin'
called for #<ATM:0x00000016482f18> (NoMethodError)
嗯，这不仅仅是花哨..似乎工作除了pin不是私人方法，非常好..（ sarcasm .. ）