Computer Science · May / June 2024 · Paper 21 · Question 5
0478
As printed in the paper
The question as text
Write the pseudocode statements to perform this task: • accept the input of a whole number from 1 to 4 inclusive • use a CASE statement to: ○ output the number (1 to 4 inclusive) that was entered ○ output the word “ERROR” if a 1 to 4 inclusive number was not entered. [5]
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Show the answer and mark scheme
One mark per mark point
MP1 Correct input statement with appropriate variable
MP2 Elements of selection statement present – CASE OF ENDCASE
MP3 At least one correct branch in the case statement
MP4 All branches from 1 to 4 correct
MP5 Correct use of OTHERWISE with correct output.
For example:
INPUT Number
CASE OF Number
1 : OUTPUT Number
2 : OUTPUT Number
3 : OUTPUT Number
4 : OUTPUT Number
OTHERWISE OUTPUT "ERROR"
ENDCASE
Or
INPUT Number
CASE OF Number
1 : OUTPUT 1
2 : OUTPUT 2
3 : OUTPUT 3
4 : OUTPUT 4
OTHERWISE OUTPUT "ERROR"
ENDCASE
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