while loop
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Does a WHILE loop repeat its instructions for as long as a condition remains true?
2. Which keyword marks the start of the repeated instructions in a WHILE loop?
3. Should a WHILE loop be closed with END WHILE?
4. Is ENDWHILE written as one word in VCAA pseudocode?
5. Is the WHILE loop's condition checked before or after the first repetition?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1WHILE count <= 5 DO | AThe closing keyword should be written as END WHILE, not ENDWHILE | |
| 2END WHILE | BStarts a loop that repeats while the condition stays true | |
| 3A structure that repeats instructions while a condition remains true | CDO | |
| 4The keyword that introduces the repeated instructions after the condition | DAssignment should use ←, not = | |
| 5count ← 0 WHILE count < 3 DO DISPLAY count count ← count + 1 ENDWHILE | EWHILE loop | |
| 6n ← 1 WHILE n <= 5 DO DISPLAY n n = n + 1 END WHILE | FCloses a WHILE loop block |
C
Definitions
WHILE condition DO
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
WHILE count <= 5 __
2.
WHILE count <= 5 DO
DISPLAY count
_________
3.
_____ count <= 5 DO
4.
WHILE x > 0 __
5.
A WHILE loop continues to repeat while its condition remains ____
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
count ← 1
B
WHILE count <= 5 DO
C
DISPLAY count
D
count ← count + 1
E
END LOOP
Question 2
A
x ← 10
B
WHILE x > 0 DO
C
PRINT x
D
x ← x - 1
E
END WHILE
Question 3
A
total ← 0
B
WHILE total < 100
C
total ← total + 10
D
END WHILE
Question 4
A
n ← 1
B
WHILE n <= 5 DO
C
DISPLAY n
D
n = n + 1
E
END WHILE
Question 5
A
WHILE score < 100
B
score ← score + 10
C
DISPLAY score
D
END WHILE
Answer Key
while loop
Section A: Quick Questions
Q1
B — True
Q2
B — DO
Q3
A — Yes
Q4
A — False
Q5
A — Before
Section B: Match the Pairs
Q1
WHILE count <= 5 DO → Starts a loop that repeats while the condition stays true
Q2
END WHILE → Closes a WHILE loop block
Q3
A structure that repeats instructions while a condition remains true → WHILE loop
Q4
The keyword that introduces the repeated instructions after the condition → DO
Q5
count ← 0
WHILE count < 3 DO
DISPLAY count
count ← count + 1
ENDWHILE → The closing keyword should be written as END WHILE, not ENDWHILE
Q6
n ← 1
WHILE n <= 5 DO
DISPLAY n
n = n + 1
END WHILE → Assignment should use ←, not =
Section C: Definitions
Q1
WHILE condition DO — A loop that repeats its instructions for as long as the given condition remains true, checked before each repetitionSection D: Fill in the Blanks
Q1
WHILE count <= 5 DOQ2
WHILE count <= 5 DO
DISPLAY count
END WHILEQ3
WHILE count <= 5 DOQ4
WHILE x > 0 DOQ5
A WHILE loop continues to repeat while its condition remains trueSection E: Spot the Error
Q1
E — A WHILE loop must be closed with END WHILE, not END LOOP.
Q2
C — VCAA pseudocode uses DISPLAY to output a value, not PRINT.
Q3
B — The WHILE condition is missing DO — it should read WHILE total < 100 DO.
Q4
D — Assignment in pseudocode uses ←, not =.
Q5
A — The WHILE condition is missing DO — it should read WHILE score < 100 DO.