Computer Science · May / June 2024 · Paper 22 · Question 6
0478
As printed in the paper
The question as text
Totalling and counting are standard methods of solution. Numbers are input. The number 9999.9 is the last number to be input and is ignored.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
6(a)[4]
One mark for:
MP1
adding current value to total
One mark for each point max three.
MP2
input more than one number
MP3
setting total to zero before loop
MP4
correct use of loop including terminal condition
MP5
output total after loop
Example:
Total ← 0
INPUT Value
WHILE Value <> 9999.9
Total ← Total + Value
INPUT Value
ENDWHILE
OUTPUT Total
Value ← 0
Total ← 0
REPEAT
Total ← Total + Value
INPUT Value
UNTIL Value = 9999.9
OUTPUT Total
6(b)[4]
One mark for each point
MP1
adding one to counter
MP2
correct use of selection, if current value > 100 THEN … ENDIF
One mark for each point, max two
MP3
input more than one number
MP4
setting counter to zero before loop
MP5
correct use of loop including terminal condition
MP6
output value of counter after loop
Example:
Counter ← 0
INPUT Value
WHILE Value <> 9999.9
IF Value > 100
THEN
Counter ← Counter + 1
ENDIF
INPUT Value
ENDWHILE
OUTPUT Counter
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