AP Computer Science Principles Unit 4

Variables

Containers for storing values in programming.

Variable Initialization

The process of creating a variable and assigning it a value in one line of code.

Assignment Operator

The equal symbol (=), used to assign values to variables in programming.

Displaying Variable Values

Using methods like write or console.log to view a variable's current value.

Boolean Expressions

Statements that determine the truth of a condition, resulting in true or false outcomes.

Equality Operator

The double equals sign (==) used for comparing values in programming.

Comparison Operators

Operators used to compare values, yielding true or false results.

If Statement

A conditional statement that checks if a condition is met and executes code accordingly.

Else Statement

An extension of an if statement that executes code when the initial condition is false.

Else If Statement

A conditional statement that allows checking multiple conditions in succession.

AND Operator

A logical operator that requires both conditions to be true for the overall expression to be true.

OR Operator

A logical operator that requires at least one of the conditions to be true for the overall expression to be true.

Functions

Blocks of code defined to perform specific tasks, which can be reused throughout a program.

Function Definition

The process of creating a function by assigning it a name and a sequence of actions.

Function Call

The act of executing a function by using its name followed by parentheses.

Abstraction

The concept of using functions to simplify complex problems by hiding implementation details.

Descriptive Function Names

Meaningful names provided to functions to enhance readability and usability of code.