Computer Science · Oct / Nov 2016 · Paper 23 · Question 1
2210
As printed in the paper
Show the answer and mark scheme
1(a)[8]
Many correct answers, the identifiers must be meaningful. These are examples only. There are two marks available for each identifier:
1 mark for suitable name1 mark for a suitable data structure, data type and use – MaxVotes, constant, integer, maximum number of votes that can be cast – CandidateName, array, string, name of candidate – NoCandidates, variable, integer, number of candidates – TotalNoCandidateVotes, array, integer, total number of votes cast [8]1(b)[4]
Any four from:
– prompt for input of candidate number – input of candidate number – check for candidate number of 1, 2 or 3 – output ‘invalid vote’ if input not 1, 2, or 3 – otherwise add 1 to appropriate total and … – … output name of candidate voted for [4]
1(c)[6]
Description (may include reference to programming statements) any six marks from – output total and … – … corresponding candidate name... – description of method for selecting descending order of totals – evidence that the method works – check if highest number of votes is a unique value – if unique output the candidate name and ‘NEW CLASS CAPTAIN’ – otherwise output ‘NO OVERALL WINNER’ [6]
1(d)[2]
Accept any reasonable suggestion(s), two marks can be awarded for either a suggestion with an accompanying description e.g. – re run the voting (1)
without the least popular candidate (1)
or accept two different suggestions e.g. – re run the voting – give the teacher the casting vote. [2]
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