DECLARE a variable (7c)
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which line correctly declares a variable to count how many lives a player has left?
2. Which line declares a variable to store a price that can include pence, such as 12.50?
3. Which line correctly declares a variable that holds TRUE or FALSE to show whether a game has ended?
4. When should DECLARE Counter : INTEGER appear in an algorithm?
5. Which line follows the standard layout for spacing around the colon?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1DECLARE Counter : INTEGER | AThe variable is used before it is declared. The DECLARE line must come first, then the assignment. | |
| 2DECLARE GameOver : BOOLEAN | BThe colon is missing. The correct format is DECLARE TotalToPay : REAL, with a space on each side of the colon. | |
| 3Declare a variable to store a price that has decimal places | CDECLARE Counter : INTEGER Counter ← 0 | |
| 4A variable must be declared before it is used, so DECLARE comes first | DCreates a variable called GameOver that can only hold TRUE or FALSE | |
| 5Counter ← 0 DECLARE Counter : INTEGER | ECreates a variable called Counter that can only store whole numbers | |
| 6DECLARE TotalToPay REAL | FDECLARE TotalToPay : REAL |
C
Definitions
DECLARE Counter : INTEGER
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
_______ Counter : INTEGER
2.
DECLARE TotalToPay : ____
3.
DECLARE GameOver : _______
4.
DECLARE Counter _ INTEGER
5.
DECLARE Counter : INTEGER
_______ ← 0
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
DECLARE Counter : INTEGER
B
DECLARE TotalToPay : REAL
C
DECLARE GameOver BOOLEAN
Question 2
A
declare Counter : INTEGER
B
Counter ← 0
C
OUTPUT Counter
Question 3
A
DECLARE Score : INTEGER
B
DECLARE Price : REAL
C
DECLARE Name : STRING
D
DECLARE Done : BOOL
Question 4
A
DECLARE Total : INTEGER
B
DECLARE Count:INTEGER
C
Total ← 0
D
Count ← 0
Question 5
A
DECLARE Price : REAL
B
DECLARE Qty : INTEGER
C
Price ← 4.5
D
Qty ← 2.5
Answer Key
DECLARE a variable (7c)
Section A: Quick Questions
Q1
B — DECLARE Lives : INTEGER
Q2
B — DECLARE TotalToPay : REAL
Q3
A — DECLARE GameOver : BOOLEAN
Q4
A — Before Counter is used
Q5
A — DECLARE Counter : INTEGER
Section B: Match the Pairs
Q1
DECLARE Counter : INTEGER → Creates a variable called Counter that can only store whole numbers
Q2
DECLARE GameOver : BOOLEAN → Creates a variable called GameOver that can only hold TRUE or FALSE
Q3
Declare a variable to store a price that has decimal places → DECLARE TotalToPay : REAL
Q4
A variable must be declared before it is used, so DECLARE comes first → DECLARE Counter : INTEGER
Counter ← 0
Q5
Counter ← 0
DECLARE Counter : INTEGER → The variable is used before it is declared. The DECLARE line must come first, then the assignment.
Q6
DECLARE TotalToPay REAL → The colon is missing. The correct format is DECLARE TotalToPay : REAL, with a space on each side of the colon.
Section C: Definitions
Q1
DECLARE Counter : INTEGER — Creates a variable named Counter and states its data type (INTEGER) before it is used. The format is DECLARE <identifier> : <data type>, with a space on each side of the colon.Section D: Fill in the Blanks
Q1
DECLARE Counter : INTEGERQ2
DECLARE TotalToPay : REALQ3
DECLARE GameOver : BOOLEANQ4
DECLARE Counter : INTEGERQ5
DECLARE Counter : INTEGER
Counter ← 0Section E: Spot the Error
Q1
C — The colon is missing. The format is DECLARE <identifier> : <data type>, so it should be DECLARE GameOver : BOOLEAN.
Q2
A — Pseudocode keywords must be written in upper case. It should be DECLARE Counter : INTEGER.
Q3
D — BOOL is not a pseudocode data type. The correct data type name is BOOLEAN, so the line should be DECLARE Done : BOOLEAN.
Q4
B — There must be a space on each side of the colon. It should be DECLARE Count : INTEGER.
Q5
D — Qty was declared as INTEGER, so it can only store whole numbers. 2.5 is a REAL value, so use a whole number such as Qty ← 2.