Intro to Ruby - 12 - Input, Output

01_hello.rb

puts “Enter your name:”
name = gets.chomp
puts “Hello, #{name}!”

## Output

# PROMPT> ruby hello.rb
# Enter your name:
# Michael
# Hello, Michael!

02_hello.rb

name = ARGV[0]
puts “Please pass a name” unless name
puts “Hello, #{name}!” if name

## Output

# PROMPT> ruby hello2.rb Michael
# Hello, Michael!

03_fizzbuzz.rb

def get_higher_limit
  limit = ARGV[0]
  limit = 100 unless limit
  return limit.to_i
end

def get_result(number)
  if(number % 3 == 0 && number % 5 == 0)
    return "FizzBuzz"
  elsif(number % 3 == 0)
    return "Fizz"
  elsif(number % 5 == 0)
    return "Buzz"
  else
    return number.to_s
  end
end

limit = get_higher_limit

1.upto(limit) do |n|
  puts get_result(n)
end

04_fizzbuzz_extra.rb

def get_higher_limit
  puts "Enter max number: "
  limit = gets.chomp.to_i
  return limit
end

def get_result(number)
  if(number % 3 == 0 && number % 5 == 0)
    return "FizzBuzz"
  elsif(number % 3 == 0)
    return "Fizz"
  elsif(number % 5 == 0)
    return "Buzz"
  else
    return number.to_s
  end
end

limit = get_higher_limit

1.upto(limit) do |n|
  puts get_result(n)
end