Computer Science · May / June 2022 · Paper 22 · Question 1

Many correct answers, the name used must be meaningful. The name given is an example only.

One mark per mark point, max three

Constant

AdultCostOneDay

Value

20.00

Use

Storing the cost of an adult ticket for one day

Many correct answers, the name used must be meaningful. The name given is an example only.

One mark per mark point, max three

Variable

NumberOfTickets // NumberOfAdultTickets

Data type

Integer

Use

Inputting the number of tickets purchased // Inputting the number of adult tickets purchased

One mark per mark point, max three

MP1

using an array or variables // lookup // input today’s date

MP2

use a loop / FOR / REPEAT / WHILE statement

MP3

… to output / display today’s date / today using a suitable message

MP4

… and the 6/7 following dates/days // loop 6/7 times

or

MP5

using an array or variables // lookup // input today’s date

MP6

array/ variables contains all the days of the week / the next seven days or dates

MP7

attempt to output / display available days using a suitable message(s)

One mark per mark point, max two

MP1

method used to allocate a new number, e.g. initialise a variable or counter // select a random number

MP2

how it ensured uniqueness, e.g. every booking number is one larger than the previous number

// check existing bookings to ensure it hasn’t been used before

One mark per mark point, max six

MP1

initialise a running total for the cost of the booking

MP2

input (with prompt) the number of tickets

MP3

… attempt to identify type of ticket

MP4

… add the cost of tickets to the running total

MP5

ability to book several types of ticket

MP6

attempt to check that the number of children booked is less than or equal to twice the number of adults

MP7

attempt to identify type of attraction

MP8

input with prompt the number of selected attractions required

MP9

… check that this number is not greater than the total number of tickets booked

MP10

… add the cost of the attractions to the (running) total

Example answer

TotalCost ← 0

TotalPeople ← 0

OUTPUT "Do you want single tickets? Y/N"

INPUT Single

IF Single = "Y"

THEN

FOR Type ← 1 TO 3 // adults, children and seniors

REPEAT

Flag ← True

OUTPUT "How many ",TicketDecription[Type], " tickets"

INPUT NumberOfTickets[Type]

IF Type = 2

THEN

IF NumberOfTickets[2] > 2 * NumberOfTickets[1]

THEN

Flag ← FALSE

OUTPUT "Too many children"

ENDIF

ENDIF

UNTIL NumberOfTickets[Type] >= 0 AND Flag

TotalCost ← TotalCost + TicketPrice[Type] * NumberOfTickets[Type]

TotalPeople ← TotalPeople + NumberOfTickets[Type]

NEXT Type

ENDIF

OUTPUT "Do you want a family ticket? Y/N"

INPUT Family

IF Family = "Y"

THEN

OUTPUT "How many?"

INPUT NumberOfTickets[4]

TotalCost ← TotalCost + TicketPrice[4] * NumberOfTickets[4]

TotalPeople ← TotalPeople + NumberOfTickets[4] * 5

ENDIF

OUTPUT "Do you want a group ticket? Y/N"

INPUT Group

IF Group = "Y"

THEN

OUTPUT "How many people in the group?"

INPUT NumberOfTickets[5]

TotalCost ← TotalCost + TicketPrice[5] * NumberOfTickets[5]

TotalPeople ← TotalPeople + NumberOfTickets[5]

ENDIF

REPEAT

OUTPUT "How many people would like to see the lion feeding?"

INPUT LionFeedingNumber

IF TotalPeople >= LionFeedingNumber

THEN TotalCost ← TotalCost + LionFeedingNumber * LionfeedingPrice

ENDIF

OUTUT "How many people would like to see the penguin feeding?"

INPUT PenguinFeedingNumber

IF TotalPeople >= PenguinFeedingNumber

THEN TotalCost ← TotalCost + PenguinFeedingNumber * PenguinfeedingPrice

ENDIF

UNTIL TotalPeople >= PenguinFeedingNumber AND TotalPeople >= LionFeedingNumber

Explanation

One mark per mark point, max three

MP1

use of selection (or any other method) to identify bookings with 2 or more adults and/or seniors and 2 (allow 3) or more children

MP2

calculating new price including family ticket(s) for booking / tickets sold

MP3

… use of condition to compare price of family ticket(s) to price of ordinary tickets / group ticket(s) …

MP4

… identifying best value / lowest cost

Section B