Welcome back. Take a look in your calendar and mark this date.
Today is the day you are crossing over the line,
from someone who can just write code that does something to being a real programmer,
someone who can abstract from a bit of code that works on one piece of data,
to writing a function that will operate on any similar piece of data.
Today is your day. I hope you'll celebrate in some way,
have a special treat,
brag to your friends,
or at least make a celebratory post in the forums.
At the end of this lesson,
you will be able to define functions with appropriate names for formal parameters,
identify formal parameters and parameter values in a code sample,
and you'll be able to predict the return value of a function
given sample parameter values. See you next time.