Code Maintenance CS Thinking Example 2

Follow the full solution, then compare it with the other examples linked below.

Example 2

medium
List four practices that make code easier to maintain, and explain why each helps.

Solution

  1. 1
    Step 1: (1) Meaningful variable/function names — readers understand purpose without comments. (2) Consistent indentation — shows structure at a glance.
  2. 2
    Step 2: (3) Modular design with small functions — each function can be understood, tested, and modified independently. (4) Comments explaining complex logic — future developers understand the reasoning.
  3. 3
    Step 3: These practices are about communication. Code is maintained for years, often by people who did not write it.

Answer

Meaningful names, consistent formatting, modular design, and clear comments. All reduce the time needed to understand and modify code.
Code maintenance consumes the majority of a software project's lifetime cost. Investing in readable, well-structured code upfront saves significant time and money over the project's life.

About Code Maintenance

The ongoing process of updating, fixing, and improving software after its initial release to correct bugs, adapt to new requirements, improve performance, and keep dependencies current. Maintenance includes four types: corrective (fixing bugs), adaptive (adapting to new environments), perfective (improving functionality), and preventive (reducing future problems).

Learn more about Code Maintenance →

More Code Maintenance Examples

Example 1 easy

A program uses the number 0.2 (tax rate) in 15 different places. Why is this a maintenance problem,

Example 3 medium

Identify three maintenance problems in this code: x = INPUT(). y = x * 0.175. z = x + y. OUTPUT z. R

Example 4 hard

Explain the term 'technical debt' and give two examples of how it accumulates. How does it affect lo

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