Computer Science · May / June 2023 · Paper 21 · Question 6
0478
As printed in the paper
The question as text
State two features that should be included to create a maintainable program. Give a reason why each feature should be used. 1 2 [4]
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
One mark for each correct feature, max two
One mark for each correct accompanying reason, max two
For example:
Meaningful identifiers – to enable the programmer (or future programmers) to easily recognize the purpose of a variable / array / constant // to enable easy tracking of a variable / constant / array through the program
Use of comments – to annotate each section of a program so that a programmer can find specific sections / so that the programmer knows the purpose of that section of code
Procedures and functions – to make programs modular and easier to update / add functionality
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