GetCode.rb

dial_book = {
    "newyork" => "212",
    "newbrunswick" => "732",
    "edison" => "908",
    "plainsboro" => "609",
    "sanfrancisco" => "301",
    "miami" => "305",
    "paloalto" => "650",
    "evanston" => "847",
    "orlando" => "407",
    "lancaster" => "717"
}

def get_city_names(somehash)
    somehash.keys
end

def get_area_code(somehash, key) 
    somehash[key]
end

loop do
    puts  "Do you want to lookup an area code based on a city name?(Y/N)"
    ans = gets.chomp.downcase
    break if ans != "y"
    
    puts "which city do you want to lookup the area code for?"
    puts get_city_names(dial_book)

    puts "Enter your selection: "
    prompt = gets.chomp

    if dial_book.include?(prompt)
        puts "the are code for #{prompt} is #{get_area_code(dial_book, prompt)}"
    else 
        puts "the area is not in the book"
    end
end