Identifier rules in Cambridge pseudocode

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which identifier follows the Cambridge pseudocode rules?

A first_name

B FirstName

2. Which identifier is valid?

A TotalScore

B Total Score

3. Which identifier is valid?

A 1Player

B Player1

4. Which identifier is valid?

A Price

B Price$

5. Which identifier is valid?

A Cafe

B Café

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1FirstName		AA valid identifier that uses a digit after the first character
2Score2		BThe identifier contains an underscore. Only letters and digits are allowed, so it should be FirstName.
3An identifier must not contain spaces or underscores, so join the words together in PascalCase		CCONSTANT PassMark ← 50
4An identifier can be the name of a constant as well as a variable, and it still follows the PascalCase rules		DDECLARE TotalScore : INTEGER
5DECLARE first_name : STRING		EThe identifier starts with a digit. An identifier must start with a capital letter, so it should be SecondScore.
6DECLARE 2ndScore : INTEGER		FA valid identifier: PascalCase, letters only, starts with a capital letter

Definitions

identifier

Fill in the Blanks

Complete each line of code by filling in the missing parts.

DECLARE FirstName : STRING FirstName ← "Ava" OUTPUT _________

_______ TotalScore : INTEGER TotalScore ← 0 OUTPUT TotalScore

DECLARE Score2 : INTEGER Score2 ← 10 OUTPUT ______

CONSTANT MaxScore ← 100 OUTPUT "Top mark:" OUTPUT ________

DECLARE TotalCost : REAL TotalCost ← 9.5 ______ TotalCost

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A DECLARE FirstName : STRING

B DECLARE Age : INTEGER

C INPUT First Name

D OUTPUT FirstName

Question 2

A DECLARE Score : INTEGER

B DECLARE Total_Score : INTEGER

C TotalScore ← Score * 2

Question 3

A DECLARE 1stPlayer : STRING

B INPUT FirstPlayer

C OUTPUT FirstPlayer

Question 4

A DECLARE Price : REAL

B DECLARE Quantity : INTEGER

C INPUT Quantity

D Price ← Quantité * 2.5

Question 5

A CONSTANT MaxMark ← 100

B DECLARE Mark : INTEGER

C INPUT Mark$

D OUTPUT Mark, MaxMark

Answer Key

Identifier rules in Cambridge pseudocode

Section A: Quick Questions

B — FirstName

A — TotalScore

B — Player1

A — Price

A — Cafe

Section B: Match the Pairs

FirstName → A valid identifier: PascalCase, letters only, starts with a capital letter

Score2 → A valid identifier that uses a digit after the first character

An identifier must not contain spaces or underscores, so join the words together in PascalCase → DECLARE TotalScore : INTEGER

An identifier can be the name of a constant as well as a variable, and it still follows the PascalCase rules → CONSTANT PassMark ← 50

DECLARE first_name : STRING → The identifier contains an underscore. Only letters and digits are allowed, so it should be FirstName.

DECLARE 2ndScore : INTEGER → The identifier starts with a digit. An identifier must start with a capital letter, so it should be SecondScore.

Section C: Definitions

identifier — The name of a variable, constant, procedure or function. Use PascalCase: letters and digits only, no spaces or underscores, start with a capital letter, e.g. FirstName.

Section D: Fill in the Blanks

DECLARE FirstName : STRING
FirstName ← "Ava"
OUTPUT FirstName

DECLARE TotalScore : INTEGER
TotalScore ← 0
OUTPUT TotalScore

DECLARE Score2 : INTEGER
Score2 ← 10
OUTPUT Score2

CONSTANT MaxScore ← 100
OUTPUT "Top mark:"
OUTPUT MaxScore

DECLARE TotalCost : REAL
TotalCost ← 9.5
OUTPUT TotalCost

Section E: Spot the Error

C — An identifier cannot contain spaces, so 'First Name' is read as two separate words. It should be INPUT FirstName.

B — Identifiers may only use letters and digits, so underscores are not allowed. Use PascalCase: DECLARE TotalScore : INTEGER.

A — An identifier cannot start with a digit. It must start with a letter, so the line should be DECLARE FirstPlayer : STRING.

D — Identifiers cannot contain accented letters such as é. Only the plain letters A-Z and digits are allowed, so it should be Quantity.

C — Symbols such as $ cannot be used in identifiers. Only letters and digits are allowed, so it should be INPUT Mark.