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comparisons.rb
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comparisons.rb
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# In the exercises below, write your own code where indicated
# to achieve the desired result.
# One example is already completed. Your task is to complete
# any remaining prompt.
# Make sure to run the file in your command line. Look back
# at the directions from Section 1 if you need a refresher on how to do that.
#-------------------
# PART 1: Comparing variables
#-------------------
number_teachers = 4
number_students = 20
string_teachers = "4"
numberDogs = 0
# EXAMPLE: print the result of the comparison: is number_seachers greater than number_students?
#puts "Is number_teachers greater than number_students?", number_teachers > number_students
# this should print: "Is numberTeachers greater than numberStudents?" false
# YOU DO: print the result of the comparison: is number_teachers less than number_students?
puts "Is number_teachers less than number_students?", number_teachers < number_students
# this should print: true
# YOU DO: print the result of the comparison: is number_teachers equal to string_teachers?
puts "Is number_teachers equal to string teachers?", number_teachers == string_teachers
# this should print: false
# YOU DO: print the result of the comparison: is number_teachers not equal to number_students?
puts "Is number_teachers not equal to number_students?", number_teachers != number_students
# this should print: true
# YOU DO: print the result of the comparison: is number_students greater than or equal to 20?
puts "Is number_students greater than or equal to 20?", number_students >= 20
# this should print: true
# YOU DO: print the result of the comparison: is number_students greater than or equal to 21?
puts "Is number_students greater than or equal to 21?", number_students >= 21
# this should print: false
# YOU DO: print the result of the comparison: is number_students less than or equal to 20?
puts "Is number_students less than or equal to 20?", number_students <= 20
# this should print: true
# YOU DO: print the result of the comparison: is number_students less than or equal to 21?
puts "Is number_students less than or equal to 21?", number_students <= 21
# this should print: true
#-------------------
# PART 2: Articulating what you are doing
#-------------------
# For the following prompts, you will be given a line of code and your task is to type out a Comment,
# in English, explaining what that line of code is doing, including what the comparison will evaluate to.
# Be as technically precise as possible, but don't just copy and paste a definition from the readings.
# Make sure YOU can explain it that way!
# puts 4 < 9
# #YOU DO: Explain.
#Compares integers 4 and 9 and if 4 is less than 9. This should be true
# books = 3
# puts 4 < books
# # YOU DO: Explain.
#Compares the integer 4 with the value of the variable books which is 3. Asks is 4 less than 3. This should be false
# friends = 6
# siblings = 2
# puts friends > siblings
# YOU DO: Explain.
#Compares the number of friends to number of siblings. Asks if the number of friends is greater than the number of siblings.
#This should be true.
# attendees = 9
# meals = 8
# puts attendees != meals
# YOU DO: Explain.
#Compares the number of attendees to the number of meals. Asks if attendees does not equal meals. This should be true.
#-------------------
# PART 3: Logical Operators
#-------------------
# is_hungry = true
# finished_homework = false
# # EXAMPLE:
# # Determine if the user is hungry and has completed their homework
# puts is_hungry && finished_homework
# # Determine if the user is hungry or has completed their homework
# puts is_hungry || finished_homework
loves_to_play = true
loves_dog_park = false
loves_treats = true
age = 1
# YOU DO:
# Determine if the dog loves to play and loves treats
puts loves_to_play && loves_treats
# Determine if the dog loves to play and loves the dog park
puts loves_to_play && loves_dog_park
# Determine if the dog loves to play or loves the dog park
puts loves_to_play || loves_dog_park
# Determine if the dog loves to play and is a puppy
# Assume that a dog is a puppy if it is less than 2 years old.
puts loves_to_play && age <2
# What did your final line of code evaluate to? Why do you think that is? Explain.
# ANSWER: My final line of code came back true because it asked in the dog loves to play and is less than two years old.
#Since the answer was yes to both of these questions it came back true.