Ruby output formats differently on dynamic v. static input - ruby

Question

FYI: Fist time I've written Ruby.
We have to write an Address Book program. I have many parts working at this point but have run into something I don't get.
I add contacts to the address book statically before the program runs. Then I try to have a user add a contact dynamically. When I print this address book the contacts added statically are printed according to formatting I expect, but the ones added dynamically are all over the place.
I've added all my code here. It's sort of a big chunk but not too bad...
# Address class
class Address
attr_accessor :street, :city, :state, :zip
# default constructor
def initialize(*args)
if (args.size == 0 )
#street = #city = #state = #zip = ""
elsif (args.size == 4)
#street = args[0]
#city = args[1]
#state = args[2]
#zip = args[3]
else
puts('Constructor takes 0 or 4 arguments. No address information has been set.')
end
end
# string representation of address
def to_s
" " + #street + "\n" + \
" " + #city + " " + #state + ", " + #zip
end
end
# Person class which holds full name, phone, and
# address as an object
class Person
attr_accessor :fname, :lname, :phone, :address
def initialize(*args)
if (args.size == 0 )
#fname = #lname = #phone = ""
#address = Address.new
elsif (args.size == 4)
#fname = args[0]
#lname = args[1]
#phone = args[2]
#address = args[3]
else
puts('Incorrect number of arguments.')
end
end
# returns full name
def full_name
#lname + ", " + #fname
end
def to_s
" " + full_name + "\n" + \
#address.to_s + "\n" + \
" " + #phone
end
end
# AddressBook class to hold addresses
class AddressBook
def initialize
# empty array
#persons = []
end
# adds a person to the address book
def add(person)
#persons += [person]
#persons = #persons.sort{|a,b| by_name(a,b)}
end
def by_name(a,b)
if a.lname == b.lname
a.fname <=> b.fname
else
a.lname <=> b.lname
end
end
# removes a person from the address book
def remove(person)
# Use Array#delete
#persons.delete(person)
end
def to_s
add_book = ""
for p in #persons do
add_book += p.to_s + "\n\n"
end
return add_book
end
end
#
# Here I add three contacts in two different ways
#
#
# FIRST ONE
#
sandy_addr = Address.new
sandy_addr.street = "324 Campus Dr."
sandy_addr.city = "College Park"
sandy_addr.state = "OH"
sandy_addr.zip = "55555"
sandy = Person.new
sandy.fname = "Sandy"
sandy.lname = "Koh"
sandy.phone = "651-442-5710"
sandy.address = sandy_addr
#
# SECOND ONE
#
bill_addr = Address.new('536 Green Rd.', "Saint Paul", "MN", "56545")
bill = Person.new('William', 'Perry', '675-778-6754', bill_addr)
#
# THIRD ONE
#
angela_addr = Address.new('3390 Crookston Rd.', "Miami", "FL", "78654")
angela = Person.new('Angela', 'Anderson', '345-748-1754', angela_addr)
# Contacts added to the Address Book
#addressBook = AddressBook.new
#addressBook.add(sandy)
#addressBook.add(angela)
#addressBook.add(bill)
# Main method loop that runs the program
# Allows you to enter a contact, print a list of
# contacts and exit the program
def loop(addBook)
selection = 0
until(selection == 5)
puts("Wlecome to the Address Book\n")
puts("1. Add a Contact\n")
puts("2. Delete a Contact\n")
puts("3. Retrieve a Contact\n")
puts("4. Print all Contacts\n")
puts("5. Exit Address Book\n")
selection = gets().to_i
if(selection == 1)
addContact(addBook)
elsif(selection == 2)
#delete_contact
elsif(selection == 3)
#retrieve_contact
elsif(selection == 4)
puts(addBook)
end
end
end
def addContact(addBook)
print("Enter First Name: ")
fname = gets()
print("Enter Last Name: ")
lname = gets()
print("Enter Phone Number: ")
phone = gets()
print("Enter Street Address: ")
street = gets()
print("Enter City: ")
city = gets()
print("Enter State: ")
state = gets()
print("Enter Zip Code ")
zip = gets()1
newAddress = Address.new(street, city, state, zip)
newPerson = Person.new(fname, lname, phone, newAddress)
addBook.add(newPerson)
out = %q/#{fname} #{lname} has been added to the Address Book./
puts(out)
end
loop(#addressBook)

Answer 1

The gets method includes the newline so your fname in addContact will be, for example, "Bob\n" rather than the "Bob" that you're expecting. Have a look at chomp.

Answer 2

You problem is probably caused because gets() returns the entire line including the newline character at the end. Try replacing every gets() with gets.chomp.