An un-maintainable code is one of the candidates that negatively affect overall software maintainability and hence adding to maintenance cost and time.

Search the internet for the term “un-maintainable code” and write down one page article on the following topic:

“Guidelines to avoid un-maintainable code”

Note:

1) Article should be formatted precisely without any grammatical mistake.

2) In case if you need to quote any stuff from other source, then provide proper reference of this source.