A-LevelComputer ScienceProgramming9618/33 · May/June 2025 · Q115 Marks
The pseudocode algorithm below allows a user to input a new stock item. The random file is searched for the next empty location in the file and the new item is inserted there. A suitable message is displayed if the file is full. Complete this pseudocode. DECLARE Location : INTEGER DECLARE NewStock : STRING DECLARE CurrentStock : STRING DECLARE Stored : BOOLEAN DECLARE Max : INTEGER Max ← 100000 Stored ← FALSE Location ← 1 OUTPUT "Enter the new item you wish to store: " INPUT NewStock WHILE NOT Stored AND Location <= Max GETRECORD "StockList.dat", IF CurrentStock = "" THEN ENDIF ENDWHILE THEN OUTPUT "The new item has not been stored as the file was full." ENDIF CLOSEFILE "StockList.dat"
- DECLARE Location : INTEGER DECLARE NewStock : STRING DECLARE CurrentStock : STRING DECLARE Stored : BOOLEAN DECLARE Max : INTEGER Max ← 100000 Stored ← FALSE Location ← 1 OUTPUT "Enter the new item you wish to store: " INPUT NewStock WHILE NOT Stored AND Location <= Max GETRECORD "StockList.dat", IF CurrentStock = "" THEN ENDIF ENDWHILE THEN OUTPUT "The new item has not been stored as the file was full." ENDIF CLOSEFILE "StockList.dat"[5]
Mark scheme
Marking points from the official mark scheme (May/June 2025). The mark or mark type is shown in brackets.
- [5] One mark for each correctly completed line
- DECLARE Location : INTEGER
- DECLARE NewStock : STRING
- DECLARE CurrentStock : STRING
- DECLARE Stored : BOOLEAN
- DECLARE Max : INTEGER
- Max ← 100000
- Stored ← FALSE
- Location ← 1
- OPENFILE "StockList.dat" FOR RANDOM
- OUTPUT "Enter the new item you wish to store"
- INPUT NewStock
- WHILE NOT Stored AND Location <= Max
- SEEK "StockList.dat", Location
- GETRECORD "StockList.dat", CurrentStock
- IF CurrentStock = "" THEN
- PUTRECORD "StockList.dat", NewStock
- Stored ← TRUE
- ELSE
- Location ← Location + 1
- ENDIF
- ENDWHILE
- IF Stored = FALSE THEN
- OUTPUT "The new stock item has not been stored as the file was full"
- ENDIF
- CLOSEFILE "StockList.dat"
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