Booleans and Conditionals, and Loops

Boolean expression

An expression that evaluates to true or false

condition

the Boolean expression checked by an if statement or loop

if statement

Executes code only when its condition is true

if-else statement

Executes one block when the condition is true and another block when it is false

Conditional tracing

Evaluate the condition first, then follow only the block selected by its result

Loop

repeats a block of code while a condition is true

While loop

checks its condition and repeatedly executes its body while the condition remains true

For Loop

places initialization, condition and update in one loop header

loop update

changes the loop variable after each repetition

loop body

the statements repeated during every loop execution

iteration

one complete repetition of a loop

nested loop

a loop located inside another loop

Nested-loop count

Multiply the number of outer loop repetitions by the number of inner loop repetitions when the inner loop runs equally each time

Infinite loop

a loop that never stops b/c its condition never becomes false

Loop tracing

record the variables, condition result, output, and update for each iteration

Accumulator

A variable that collects a total or builds a result during a loop

accumulation loop strategy

initialize a value before the loop, update it inside the loop, and return the result afterward