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Speak to Grandma

Objectives

  1. Control flow by using if, elsif, and else statements.
  2. Manipulate strings correctly.
  3. Evaluate the type case of a string.

Instructions

  1. Fork and clone this lab.
  2. Run the test suite using either the rspec or learn command. You'll be coding your solution in grandma.rb.
  3. Write a speak_to_grandma method.
    • The method should take in a string argument containing a phrase and check to see if the phrase is written in all uppercase: if it isn't, then grandma can't hear you. She should then respond with (return) HUH?! SPEAK UP, SONNY!.
    • If you shout at her (i.e. call the method with a string argument containing a phrase that is all uppercase, then she can hear you (or at least she thinks that she can) and should respond with (return) NO, NOT SINCE 1938!.
  • However, if the phrase is exactly equal to: "I LOVE YOU GRANDMA!", then Grandma is very pleased and definitely hears that! and should repond with (return) I LOVE YOU TOO PUMPKIN!

A few things to think about:

  • You'll need to use if, elsif, and else statements to implement the logic of grandma responding with the appropriate string based on whether or not you speak to her in all uppercase, and/or whether you express your love.
  • Think about how we can check to see if a string is all uppercase. Reference the information below on manipulating strings.
  • Think about the response as a return value.

Manipulating Strings

One of the things you'll need to determine is if the argument that the speak_to_grandma method takes in is formatted a certain way (all uppercase).

There are many methods on the String class that manipulate strings. Let's take a look at a few:

"Hello World".upcase
#=> "HELLO WORLD"
"Hello World".reverse
#=> "dlroW olleH" 
"Hello World".downcase
#=> "hello world" 
"Hello World".capitalize
#=> "Hello world" 
"Hello World".swapcase
#=> "hELLO wORLD" 

Which one can we use to check that the argument string (i.e. what you're saying to Grandma) is all uppercase? You can use the comparison operator (==) to determine if the string you pass into your method call as an argument matches ("is equal to") that same string, but in uppercase form.

On that same note, we can also use the comparison operator to check and see if the string matches "I LOVE YOU GRANDMA!"

View Speak to Grandma on Learn.co and start learning to code for free.

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