Stud_Acc_Gen_arrays.rb

input_choice = nil
full_names = Array.new
id_nums = Array.new
emails = Array.new

# Introduce Program to user, select manual or file mode, and
# initiate the array of full_names accordingly.
puts "Welcome to Ada's Student Account Generator."
puts "Would you like to enter student names manually or by file?
Enter 'M' for manually or 'F' for file:"
input_choice = gets.chomp.upcase()
if input_choice == "F"
  puts "What is the name of your text file, extension included?
  Note: make sure your text file has no trailing empty lines."
  file_name = gets.chomp
  full_names = File.readlines(file_name)
end
if input_choice == "M"
  puts "How many names will you enter?"
  full_names = Array.new(gets.chomp.to_i)
end

# Times loop to get student names (if entering manually), create
# ID numbers, and generate student emails
(full_names.length).times do |i|
  # finalize full_names
  if input_choice == "M"
    puts "enter student name:"
    full_names[i] = gets.chomp.upcase()
  else
    full_names[i] = full_names[i].chomp.upcase()
  end

  # generate ID #
  id_nums[i] = rand(111111..999999)
  until id_nums.length == id_nums.uniq.length
    id_nums[i] = rand(111111..999999)
  end

  # generate email
  fnl_names = full_names[i].split(" ")
  f_initial = fnl_names[0][0,1]
  if fnl_names.length > 2
    f_initial << fnl_names[1][0,1]
  end
  emails[i] = f_initial + fnl_names.last + id_nums[i].to_s[3,5] + "@adadevelopersacademy.org"
end

# Print all students' generated account info
(full_names.length).times do |i|
  puts full_names[i] + ": ID - " + id_nums[i].to_s + ", email - " + emails[i] + "\n"
end