Parts of a Function

• function: defines the function.
• name: name of the funciton, hello in our case.  Use this later to call the function.
• parameter list, parameters (arguments): data passed to the function.  firstname and lastname in our example. Contained in parenthesis.
• {}: curly braces define the boundaries of the function.  Tell where it begins and ends.
• statements: the guts of the function, between the curly braces.
• return value (optional): a value that can be passed back to the calling statement.  Often used when the function performs a transformation on the values passed to it.