Chapter 3 Review: Decision Structures

Flashcards covering key vocabulary related to Decision Structures from Chapter 3 review questions.

decision structure

A structure that can execute a set of statements only under certain circumstances.

single alternative decision structure

A structure that provides one alternative path of execution.

Boolean expression

An expression that has a value of either True or False.

relational operators

The symbols >, <, and ==.

dual alternative decision structure

A structure that tests a condition and then takes one path if the condition is true, or another path if the condition is false.

if statement

Used to write a single alternative decision structure.

if-else statement

Used to write a dual alternative decision structure.

logical operators

and, or, and not.

and operator

Used to create a compound Boolean expression that is true only if both of its subexpressions are true.

or operator

Used to create a compound Boolean expression that is true if either of its subexpressions is true.

not operator

Takes a Boolean expression as its operand and reverses its logical value.

flag

A Boolean variable that signals when some condition exists in the program.