A-LevelComputer ScienceData types and structures9618/31 · May/June 2023 · Q44 Marks
Two descriptions of user-defined data types are given. Give appropriate type declaration statements for each, including appropriate names.
- (a)A data type to hold a set of prime numbers below 20. These prime numbers are: 2, 3, 5, 7, 11, 13, 17, 19[2]
- (b)A data type to point to a day in the week, for example Monday.[2]
Mark scheme
Marking points from the official mark scheme (May/June 2023). The mark or mark type is shown in brackets.
- [2] (a) One mark per mark point (Max 2) • TYPE Prime • = (2, 3, 5, 7, 11, 13, 17, 19) Example answer TYPE Prime = (2, 3, 5, 7, 11, 13, 17, 19)
- [2] (b) One mark per mark point (Max 2) • TYPE TDayPointer • = ^STRING //^DayOfWeek Example answer TYPE TDayPointer = ^STRING // ^DayOfWeek
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