Mrs. Smith CSP Fall 20 Unit 4 - Variables, Conditionals, and Functions

Expression

a combination of operators and values that evaluates to a single value

Assignment Operator

allows a program to change the value represented by a variable

Variable

a named reference to a value that can be used repeatedly throughout a program.

Boolean Value

a data type that is either true or false.

Comparison Operators

<, >, <=, >=, ==, != indicate a Boolean expression

Function

a named group of programming instructions. Also referred to as a "procedure".

Function Call

a command that executes the code within a function

Arithmetic operator

part of most programming languages and include addition, subtraction, multiplication, division, and modulus operators.

Boolean Expression

evaluates to either true or false

Concatenation

joins together two or more strings end-to-end to make a new string.

Conditional Statement

affect the sequential flow of control by executing different statements based on the value of a Boolean expression.

Evaluate

Expressions are evaluated to produce a single value.

Expression

a programming statement that can consist of a value, a variable, an operator, or a procedure call that returns a value.

Logical operator

NOT, AND, and OR, which evaluate to a Boolean value.

Procedure

a named group of programming instructions that may have parameters and return values.

Relational operator

used to test the relationship between two variables, expressions, or values. A comparison using a relational operator evaluates to a Boolean value. For example: =, ≠, >, <, ≥, and ≤

Selection

determines which parts of an algorithm are executed based on a condition being true or false

String

an ordered sequence of characters.