deleted file on accident.
missing file.
created new activites folder
created a do while loop.
Created screencast funtions folder.
basic function
created a function that calculates area and prints to console.
Functions have to be called or invoked.
calling the function
variable scope video
variable outside the function is scoped to the larger part of the document. the variable within the function is scoped to the calcArea function.
Arguments and Parameters
returning values
commenting out