- Define a method that accepts arguments.
- Create a default argument.
- Practice returning a value.
In this lab you'll be defining a method called #parrot.
The #parrot method should accept an argument of a string and both #puts out
that string and return the string at the end of the method.
The #parrot method should have a default argument of "Squawk!".
Note: This lab is explicitly testing your ability to control the return value of a
method, not just what it does, but what it returns. Remember, return values are
important. Ask yourself? what is the return value of #puts?
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