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Computer Science · Oct / Nov 2024 · Paper 22 · Question 10

0478

As printed in the paper

The question as text

The function s‡‹Œ’| calculates the length of a string  Write the pseudocode statements to: • allow a line of text to be input to an appropriate variable • store this line of text in a text file called Ô~yzÕxÖx • calculate the length of the line of text and output the text in lower case along with its length • store the lower-case line of text in a text file called sv¯w×~§ÕxÖx Make sure that any variables used are declared and that both text files are closed after they have been used. [6]

Read automatically from the paper; the printed page above is exact.

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One mark per mark point (max six)

Declaration of appropriate string variable(s)
Input of a line of text
Correct use of LCASE
Correct use of LENGTH
Opening of at least one of the required text files using given names (Main.txt, Lowercase.txt)
Storing of correct line of text to Main.txt
Storing of correct lines to Lowercase.txt
Closing of both text files
Correct output

For example:

DECLARE LineOfText : STRING

DECLARE LowercaseText: STRING

INPUT LineOfText

OPENFILE Main.txt FOR WRITE

WRITEFILE Main.txt, LineOfText

CLOSEFILE Main.txt

LowercaseText ← LCASE(LineOfText)

OUTPUT LowercaseText, LENGTH(LineOfText)

OPENFILE Lowercase.txt FOR WRITE

WRITEFILE Lowercase.txt, LowercaseText

CLOSEFILE Lowercase.txt

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