Branching/Looping

Question 1

Branch

Answer 1

Program path taken if an expression’s value is true

Question 2

Nested if-else

Answer 2

If-else statement as a branch within another if-else statement

Question 3

Boolean

Answer 3

True or False

Question 4

Operator Chaining

Answer 4

Evaluates chain of operators left to right until false

a < b < c If a is less then b check if b is less than c

Question 5

Code Block

Answer 5

Series of statements that are grouped together defined by indentation level

Question 6

Loop

Answer 6

Loop statements (loop body) repeatedly executed while loop’s expression is true. Each execution is an iteration.

Question 7

While Loop

Answer 7

Repeatedly executes while loop expression is true. At the end of the loop the expression is evaluated again.
Use when iterations not known before entering

Question 8

Sentinel Value

Answer 8

Value when evaluated by loop expression causes the loop to terminate

Question 9

Infinite Loop

Answer 9

Will always execute because expression is always true. Often caused by assuming equality will be reached.

Question 10

Loop Variable

Answer 10

Counts the number of iterations

i = 1 while i <= N: loop body i = i + 1

Question 11

For Loop

Answer 11

Performs some action during each iteration
Use when iterations known before entering loop
Use when accessing elements of a container

Question 12

Break Statement

Answer 12

Causes an immediate exit from loop

Question 13

Continue Statement

Answer 13

Causes immediate jump to loop header statement

Good way to add conditions to for loops

Question 14

Loop Else

Answer 14

Else statement executes if loop terminates without using break statement