A-LevelComputer ScienceProgramming9618/32 · May/June 2025 · Q16 Marks
Data types can be defined using pseudocode. The composite record data type, Departure, is used to represent flights from Cambridge Airport and is defined in pseudocode as: TYPE Departure DECLARE FlightNumber : STRING DECLARE Destination : STRING DECLARE FlightDate : DATE DECLARE Gate : STRING DECLARE Airline : STRING ENDTYPE A variable, Flight1, is declared in pseudocode as: DECLARE Flight1 : Departure
- (a)Write pseudocode to store the following details to Flight1: Field | Data FlightNumber | SB2789 Destination | Dublin FlightDate | 30/07/2025 Gate | N03 Airline | Cambridge Airways[3]
- (b)(i)The data type for Gate is changed to an enumerated data type, GateID. Write a pseudocode statement to declare GateID to hold the identity codes for the airport gates: N01, N02, N03, W01, W02, W03, W04[2]
- (b)(ii)Write the new pseudocode statement required to replace the declaration of Gate in Departure.[1]
Mark scheme
Marking points from the official mark scheme (May/June 2025). The mark or mark type is shown in brackets.
- MP1 Use of correct Flight1 variable with given field names
- MP2 Correct assignments of four string data values
- MP3 Correct assignment of date data value
- Flight1.FlightNumber ← "SB2789"
- Flight1.Destination ← "Dublin"
- Flight1.FlightDate ← 30/07/2025
- Flight1.Gate ← "N03"
- Flight1.Airline ← "Cambridge Airways"
- MP1 TYPE GateID =
- MP2 (N01, N02, N03, W01, WO2, W03, W04)
- TYPE GateID = (N01, N02, N03, W01, WO2, W03, W04)
- DECLARE Gate : GateID
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