Computer Science · May / June 2020 · Paper 22 · Question 4
0478
As printed in the paper
The question as text
This flowchart inputs the points won and the points lost when playing a game. The difference between the points won and lost is calculated and depending on the result the player can: move up to the next level, stay at the same level, or move down to the previous level. The flowchart finishes when the input for points won is –1. START INPUT PointsWon, PointsLost END Yes Yes Yes No No No OUTPUT "Keep on trying" OUTPUT "Sorry move down" Difference PointsWon - PointsLost IS PointsWon = –1 ? IS Difference > = 1000 ? IS Difference < 0 ? OUTPUT "Well done move up"
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
4(a)[3]
One mark for correct input (PointsWon and PointsLost)
One mark for correct calculations (Difference)
One mark for correct output
PointsWon
PointsLost
Difference
OUTPUT
5000
4474
526
Keep on trying
6055
2000
4055
Well done move up
7900
9800
-1900
Sorry move down
3000
2150
850
Keep on trying
-1
6700
4(b)[3]
Any three from:
Add extra decision box …… before checking for difference greater than or equal to 1000// change Is difference >= 1000 to >= 1000 and <= 5000
Check for difference greater than 5000Add extra Output ‘Fantastic leap up two levels’…… before flowline returns to input
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