A-LevelComputer ScienceData types and structures9618/31 · May/June 2023 · Q105 Marks

The pseudocode algorithm shown copies an active accounts text file ActiveFile.txt to an archive accounts text file ArchiveFile.txt, one line at a time. Any blank lines found in the active accounts text file are replaced with the words "Account not present" in the archive accounts text file. Complete this file-handling pseudocode. DECLARE Account : STRING OPENFILE "ArchiveFile.txt" FOR WRITE WHILE NOT READFILE "ActiveFile.txt", Account IF Account = "" THEN WRITEFILE "ArchiveFile.txt", " ELSE WRITEFILE "ArchiveFile.txt", ENDIF ENDWHILE CLOSEFILE "ArchiveFile.txt"

Mark scheme

Marking points from the official mark scheme (May/June 2023). The mark or mark type is shown in brackets.

[5] One mark for each correctly completed line (Max 5) DECLARE Account : STRING OPENFILE "ActiveFile.txt" FOR READ OPENFILE "ArchiveFile.txt" FOR WRITE WHILE NOT EOF("ActiveFile.txt") READFILE "ActiveFile.txt", Account IF Account = "" THEN WRITEFILE "ArchiveFile.txt", "Account not present" ELSE WRITEFILE "ArchiveFile.txt", Account ENDIF ENDWHILE CLOSEFILE "ActiveFile.txt" CLOSEFILE "ArchiveFile.txt"

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About this question

Topic

Data types and structures, A-Level Computer Science (syllabus 9618). Structured question, 5 marks.

Source

A-Level Computer Science, May/June 2023 Paper 3 Variant 1, question 10.

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