Maintainability

Question 1

Why does maintainability matter?

Answer 1

a programmer might return to a program they wrote before to add an extra feature, or to remove errors

understanding the code, and therefore modifying it will be easier if it is written in a maintainable style

Question 2

four features of maintainability

Answer 2

• comments
• sensible variable names
• indentation

-space between different sections of code

Question 3

comments

Answer 3

lines in programs that provide information about what the different parts of the program do

not executed when the program is run

Question 4

sensible variable names

Answer 4

often meaningless variable names such as x or y are chosen

this makes understanding them much more difficult

e.g.
height
instead of
H

Question 5

indentation

Answer 5

code within selections or iterations should be indented

this allows the programmer to easily see which code falls within the selection or iteration, and when it ends

some programming languages indent automatically