Computer Science · Oct / Nov 2021 · Paper 21 · Question 1

Constant

NoCourts // NoSessions // NoBookingSlots

Value

8 // 10 // 80

Use

Storing the number of courts / sessions available / times and courts available for booking

Any four from:

Any three from

MP1

Identifier / name of array used

MP2

Description of purpose of an identified array

MP3

Length of an identified array used

MP4

Type of data in an identified array

MP5

Explanation of number of arrays used, must be capable of storing all data required

MP6

Sample data for an identified array

One mark

MP7

Identifying more than one array

E.g.4 arrays of ten elements for each squash court, for example for squash court 1 Availability1 of type Boolean, Guest1, Mobile1 and Code1 all type string

Any three from:

MP1

Setting the first code number

MP2

How to find subsequent code numbers

MP3

How to ensure they were unique

MP4

How to ensure they were exactly 4 digits

Any six from:

MP1

Input time

MP2

… with prompt

MP3

Check each court

MP4

If court not booked …

MP5

… set as booked

MP6

Input name, mobile number

MP7

Calculate unique 4-digit code

MP8

Store name, mobile number and 4-digit code in an array

MP9

Display mobile number and 4-digit code with suitable message

MP10 Change mobile number if necessary

Sample

OUTPUT ("Which time do you want to book a squash court")

INPUT BookTime

Booked ← FALSE

CourtNumber ← 0

IF BookTime >= 8 AND BookTime <= 17

THEN

BookTime ← BookTime - 7

IF Available1[BookTime] THEN Available1[BookTime] ← FALSE; CourtNumber ← 1; Booked ← TRUE ENDIF

IF NOT Booked AND Available2[BookTime] THEN Available2[BookTime] ← FALSE; CourtNumber ← 2; Booked ← TRUE ENDIF

IF NOT Booked AND Available3[BookTime] THEN Available3[BookTime] ← FALSE; CourtNumber ← 3; Booked ← TRUE ENDIF

IF NOT Booked AND Available4[BookTime] THEN Available4[BookTime] ← FALSE; CourtNumber ← 4; Booked ← TRUE ENDIF

IF NOT Booked AND Available5[BookTime] THEN Available5[BookTime] ← FALSE; CourtNumber ← 5; Booked ← TRUE ENDIF

IF NOT Booked AND Available6[BookTime] THEN Available6[BookTime] ← FALSE; CourtNumber ← 6; Booked ← TRUE ENDIF

IF NOT Booked AND Available7[BookTime] THEN Available7[BookTime] ← FALSE; CourtNumber ← 7; Booked ← TRUE ENDIF

IF NOT Booked AND Available8[BookTime] THEN Available8[BookTime] ← FALSE; CourtNumber ← 8; Booked ← TRUE ENDIF

IF NOT Booked OUTPUT("No court available at ", BookTime + 7)

ENDIF

IF Booked

THEN

OUTPUT ("Please enter your name")

INPUT Name

Code ← Code + 1

Correct ← "N"

WHILE Correct = "N" DO

OUTPUT ("Please enter your mobile number")

INPUT Mobile

OUTPUT ("Is Your mobile number correct Y/N? ", Mobile, " Your court number is ", CourtNumber, " Your entry code is ", Code)

INPUT Correct

ENDWHILE

CASE CourtNumber OF

1 : Guest1[BookTime}← Name; Mobile1[BookTime] ← Mobile; Code1[BookTime] ← Code 2 : Guest2[BookTime}← Name; Mobile2[BookTime] ← Mobile; Code2[BookTime] ← Code 3 : Guest3[BookTime}← Name; Mobile3[BookTime] ← Mobile; Code3[BookTime] ← Code 4 : Guest4[BookTime}← Name; Mobile4[BookTime] ← Mobile; Code4[BookTime] ← Code 5 : Guest5[BookTime}← Name; Mobile5[BookTime] ← Mobile; Code5[BookTime] ← Code 6 : Guest6[BookTime}← Name; Mobile6[BookTime] ← Mobile; Code6[BookTime] ← Code 7 : Guest6[BookTime}← Name; Mobile7[BookTime] ← Mobile; Code7[BookTime] ← Code 8 : Guest8[BookTime}← Name; Mobile8[BookTime] ← Mobile; Code8[BookTime] ← Code ENDCASE

NoCoutsBooked[BookTime] ← NoCoutsBooked[BookTime] - 1

ELSE

OUTPUT ("Court not booked”)

ENDIF

Explanation

Any four from

MP1

How the program totalled the number of bookings

MP2

How the program displayed the total number of bookings

MP3

How the program calculated the number of times each court was booked

MP4

How the program selected the highest value for times a court was booked

MP5

How the program displayed the court that was most booked

Programming statements must be included and must be explained.

Section B