Identifiers in Pascal case (7c)

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which is a correctly written identifier in Pascal case?

A NumberOfPlayers

B number_of_players

2. Which identifier follows the rule of using only letters and digits?

A TotalScore2

B Total Score

3. Which identifier starts correctly?

A 1Player

B Player1

4. Which identifier has a name that describes its purpose?

A Thing

B AverageMark

5. An array index loop uses a single letter. Which is allowed?

A i

B x_1

Match the Pairs

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

Left column		Right column
1NumberOfPlayers		AA correct Pascal case identifier: each word starts with a capital letter, with no spaces or underscores
2Total2		BThe name contains an underscore. Identifiers may only use letters and digits, so it should be PlayerScore.
3A name that describes its purpose, so the reader knows what the variable stores		CDECLARE AverageMark : REAL
4Single letters such as i and j are allowed as array indices		DA valid identifier: it starts with a capital letter and uses only letters and digits
5DECLARE Player_Score : INTEGER		EThe name starts with a digit. An identifier must start with a letter, for example SecondPlace.
6DECLARE 2ndPlace : INTEGER		FFOR i ← 1 TO 10

Definitions

NumberOfPlayers

Fill in the Blanks

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

DECLARE NumberOfPlayers : INTEGER _______________ ← 4

_______ TotalScore : INTEGER TotalScore ← 0

DECLARE TotalScore : INTEGER TotalScore ← 0 OUTPUT __________

FOR _ ← 1 TO 10 OUTPUT Marks[i] NEXT i

CONSTANT MaxScore ← 100 DECLARE Score : INTEGER IF Score > ________ THEN

Spot the Error

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

Question 1

A // Count the players

B DECLARE Player_Count : INTEGER

C PlayerCount ← 4

D OUTPUT PlayerCount

Question 2

A DECLARE FinalMark : INTEGER

B DECLARE Mark : INTEGER

C INPUT Mark

D Final Mark ← Mark * 2

Question 3

A CONSTANT PassMark ← 50

B DECLARE 1stMark : INTEGER

C INPUT FirstMark

D IF FirstMark >= PassMark THEN

E OUTPUT "Pass"

F ENDIF

Question 4

A DECLARE Price : REAL

B DECLARE TotalCost : REAL

C INPUT Price

D totalCost ← Price * 3

Question 5

A DECLARE StudentCount : INTEGER

B INPUT StudentCount

C DECLARE A : REAL

D AverageMark ← 0

Answer Key

Identifiers in Pascal case (7c)

Section A: Quick Questions

A — NumberOfPlayers

A — TotalScore2

B — Player1

B — AverageMark

A — i

Section B: Match the Pairs

NumberOfPlayers → A correct Pascal case identifier: each word starts with a capital letter, with no spaces or underscores

Total2 → A valid identifier: it starts with a capital letter and uses only letters and digits

A name that describes its purpose, so the reader knows what the variable stores → DECLARE AverageMark : REAL

Single letters such as i and j are allowed as array indices → FOR i ← 1 TO 10

DECLARE Player_Score : INTEGER → The name contains an underscore. Identifiers may only use letters and digits, so it should be PlayerScore.

DECLARE 2ndPlace : INTEGER → The name starts with a digit. An identifier must start with a letter, for example SecondPlace.

Section C: Definitions

NumberOfPlayers — An identifier in Pascal case: a variable or constant name using only letters and digits, starting with a capital, with each word capitalised and no spaces or underscores.

Section D: Fill in the Blanks

DECLARE NumberOfPlayers : INTEGER
NumberOfPlayers ← 4

DECLARE TotalScore : INTEGER
TotalScore ← 0

DECLARE TotalScore : INTEGER
TotalScore ← 0
OUTPUT TotalScore

FOR i ← 1 TO 10
  OUTPUT Marks[i]
NEXT i

CONSTANT MaxScore ← 100
DECLARE Score : INTEGER
IF Score > MaxScore THEN

Section E: Spot the Error

B — Identifiers may only use letters and digits, so an underscore is not allowed. Pascal case capitalises each word instead: PlayerCount.

D — An identifier cannot contain a space, so Final Mark is not one name. It should be written FinalMark, matching the declaration.

B — An identifier cannot start with a digit. It must start with a capital letter, so use a name such as FirstMark.

D — Pascal case starts with a capital letter. totalCost starts with a lower-case t, so it should be TotalCost, as declared.

C — Identifiers should describe their purpose. A single letter like A says nothing, and only i and j are allowed as single letters (for array indices). Use AverageMark.