Arrays in pseudocode
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Do array elements use square brackets like scores[1]?
2. Is round-bracket syntax like scores(1) valid for arrays?
3. Does DECLARE scores[5] OF INTEGER declare an array of 5 integers?
4. Is the ← arrow used to assign values to array elements?
5. Does a FOR loop over an array end with END FOR?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1scores[1] ← 10 | AWrong - array elements use square brackets, not round | |
| 2DISPLAY scores[i] | BDECLARE scores[5] OF INTEGER | |
| 3Declares an array of 5 integers named scores | CWrong - array declarations need a size in brackets | |
| 4Loops through every index in the array | DAssigns the value 10 to the first array element | |
| 5scores(1) ← 10 | EPrints the value stored at index i in the array | |
| 6DECLARE scores OF INTEGER | FFOR i FROM 1 TO 5 |
C
Definitions
scores[1]
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
DECLARE scores[5] OF _______
2.
DISPLAY scores[_]
3.
FOR i FROM _ TO 5
4.
_______ scores[2]
5.
DECLARE scores[_] OF INTEGER
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
ARRAY scores[5] OF INTEGER
B
scores[1] ← 10
C
DISPLAY scores[1]
Question 2
A
DECLARE scores[5] OF INTEGER
B
scores(1) ← 10
C
DISPLAY scores[1]
Question 3
A
DECLARE scores[5] OF INTEGER
B
scores[1] ← 10
C
DISPLAY score[1]
Question 4
A
DECLARE scores[5] OF INTEGER
B
FOR i FROM 1 TO 5
C
DISPLAY scores[i]
D
END LOOP
Question 5
A
DECLARE scores OF INTEGER
B
scores[1] ← 10
C
FOR i FROM 1 TO 5
D
DISPLAY scores[i]
Answer Key
Arrays in pseudocode
Section A: Quick Questions
Q1
B — Yes
Q2
A — No
Q3
A — Yes
Q4
A — Yes
Q5
B — Yes
Section B: Match the Pairs
Q1
scores[1] ← 10 → Assigns the value 10 to the first array element
Q2
DISPLAY scores[i] → Prints the value stored at index i in the array
Q3
Declares an array of 5 integers named scores → DECLARE scores[5] OF INTEGER
Q4
Loops through every index in the array → FOR i FROM 1 TO 5
Q5
scores(1) ← 10 → Wrong - array elements use square brackets, not round
Q6
DECLARE scores OF INTEGER → Wrong - array declarations need a size in brackets
Section C: Definitions
Q1
scores[1] — Accesses the array element at index 1, using square brackets to specify the position.Section D: Fill in the Blanks
Q1
DECLARE scores[5] OF INTEGERQ2
DISPLAY scores[i]Q3
FOR i FROM 1 TO 5Q4
DISPLAY scores[2]Q5
DECLARE scores[5] OF INTEGERSection E: Spot the Error
Q1
A — Arrays are declared with DECLARE, not ARRAY, in VCAA pseudocode.
Q2
B — Array elements use square brackets, not round brackets.
Q3
C — The array name is misspelled - it should be scores, not score.
Q4
D — A FOR loop must close with END FOR, not END LOOP.
Q5
A — An array declaration needs a size in square brackets, like scores[5].