Unit 3 AP CS Principles

Lower Camel Case

The naming convention for when the first letter is lower cases and the subsequent letters are upper case.

Define a function

To teach the computer a new word, and explain what to do when it receives a new command

ex: function move right(){ turn right(); move(); }

start function

The function called when run is pressed

Variable

A symbol or container that hold a value

Canvas

The screen where graphics are drawn

Event

An action that the computer detects and uses as input.

Computer

A person or device that makes calculations, stores data, and executes instructions according to the program

readLine

Allows for the reading of user input when a string is used

readInt

Allows for the reading of user input when an integer or number is used

Coordinate system

A coordinate system uses numbers as coordinate place objects in a geometric space

Starts at (0,0) in the top left corner

println();

JavaScript function that prints out a line to the user

getWidth();

JavaScript function that returns the width of the graphics canvas

getHeight();

JavaScript function that returns the Height of the graphics canvas

Callback function

A function passed as a parameter to another function, in order to be called later

Computer Science

The study of computational thinking, the thinking humans need in order to describe step by step processes to a computer

Input/Output

The general term in programming that refers to the flow of information into and out of a program

Arithmetic Operators

Arithmetic Operators include + , addition, -, subtraction, *, multiplication, /, division, and %, modulus. These Operators are used to perform basic mathematical tasks