Computer Science · May / June 2023 · Paper 22 · Question 11
0478
As printed in the paper
The question as text
The variables P and Q are used to store data in a program. P stores a string. Q stores a character.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
11(a)[2]
One mark for any two correct lines
DECLARE P : STRING
P ← "The world"
DECLARE Q : CHAR
Q ← 'W'
11(b)[4]
One mark for each point (max four)
converting P to upper casefinding the length of Pusing a loop to check for position of Qusing the string operation substringstoring the loop counter in Position if the value is foundFor example:
P ← UCASE(P)
Counter ← 1
Position ← 0
REPEAT
IF SUBSTRING(P, Counter, 1) = Q
THEN
Position ← Counter
ENDIF
Counter ← Counter + 1
UNTIL Position <> 0 OR Counter = LENGTH(P)
11(c)[1]
5
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