Subsection 8.3. File handling for Computer Science, O Level - revisedeck

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8.3. File handling

A subsection of Computer Science, 2210, through 8. Programming

Listing 3 of 3 questions

Outline why it is useful to store data in a file. The function LENGTH(calculates the length of a string X Write the pseudocode statements to: • read the contents of the text file Quotation.txt into an appropriate string variable that has been declared • output the string in upper case and the length of the string.

2210_s24_qp_21

THEORY

2024

Paper 2, Variant 1

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Doris has data stored on her computer. She accidentally loses some data by deleting a file. State two methods she could use to help prevent accidental loss of data in this way. Describe how each method would help prevent accidental loss of the data. Method 1 Method 2

2210_w22_qp_12

THEORY

2022

Paper 1, Variant 2

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Four pseudocode descriptions and five pseudocode keywords are shown. Draw one line to link each pseudocode description to the most appropriate pseudocode keyword. Not all pseudocode keywords will be used. Pseudocode description Pseudocode keyword Give two reasons for storing data in a file. stores data in a file retrieves data from a file displays data on a screen enters data from a keyboard OUTPUT WRITE READ OPEN INPUT

2210_w23_qp_23

THEORY

2023

Paper 2, Variant 3

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Questions Discovered

3