data-types.md

Assorted Data Types

What are the outputs and/or side effects of the following code snippets?

• Make a guess before testing your answer.
• "Error out" is a valid answer choice.
• Also include a sentence on why you chose your answer.

2 ** 3

Your answer.

((16 / 4) * (2 + 1)) ** 2

Your answer.

("a milli " + "a milli") * 3

Your answer.

("a milli " * 4) / 2

Your answer.

my_favorite_number = 13
puts "My favorite number is: " + my_favorite_number

Your answer.

my_favorite_number = 13
puts "My favorite number is: #{my_favorite_number}"

Your answer.

Truthiness and Falsiness

Which of these evaluate as false in Ruby? Mark all that apply.

[ ] false
[ ] 0
[ ] ""
[ ] null
[ ] [ ] (empty array)
[ ] undefined
[ ] NaN
[ ] nil

What are the outputs and/or side effects of the following code snippets?

• Make a guess before testing your answer.
• "Error out" is a valid answer choice.
• Also include a sentence on why you chose your answer.

no_name = ""
if no_name
  puts "My name is: " + no_name
end

Your answer.

no_name = nil
if no_name
  puts "My name is: " + no_name
end

Your answer.

age = 21
if age
  puts "My age is: " + no_name
end

Your answer.

age = gets.chomp
if age
  puts "My age is: " + age
end

Your answer.

Conditionals

Write the code for the following exercise inside of the app.rb located in this repo. Run/test your code using ruby app.rb in the Terminal.

Write FizzBuzz in Ruby!

Fizz-Buzz is a classic coding exercise that you can create using your knowledge of conditionals and loops. Implement code that does the following...

• Counts from 1 to 100 and prints out something for each number.
• If the number is divisible by 3, print "Fizz".
• If the number is divisible by 5, print "Buzz".
• If the number is divisible by both 3 and 5, print "FizzBuzz".
• If the number does not meet any of the above conditions, just print the number.

Your output should look something like this...

1, 2, Fizz, 4, Buzz, Fizz, 7, 8, Fizz, Buzz, 11, Fizz, 13, 14, Fizz Buzz, 16, 17, Fizz, 19, Buzz, Fizz, 22, 23, Fizz, Buzz, 26, Fizz, 28, 29, Fizz Buzz, 31, 32, Fizz, 34, Buzz, Fizz, ...

We haven't covered loops yet, so to get you started...

i = 1
while i <= 100
  # Your code goes in here.
end