How to refactor C++ code?

C is a very powerful, flexible and widely used programming language. However, as the project continues to develop and the code continues to be reused, there will be a decline in code quality and readability. Sexual decline and other issues. At this time, the code needs to be refactored to achieve better code quality and higher maintainability.

This article will introduce how to reconstruct C code.

1. Define Goals

Before you start refactoring your code, you need to identify the goals you need to accomplish. For example, you may want to improve code readability, reduce code duplication, improve code performance, etc. No matter what your goal is, you need to be clear about it so that you have a clear idea and a clear plan to tackle the next tasks.

2. Analyze code

To refactor C code, you need to analyze the code first. This can be done through code review, performance analysis, and through professional tools such as SonarQube. Analyzing your code can help you identify areas that need to be refactored, eliminate code that may be causing problems, and ways to improve program performance.

3. Create a backup

Before refactoring your code, you need to create a backup. This is to protect your existing code to prevent problems during the development of new code. It is best to store backups in different places such as USB, cloud storage, etc. When everything is ready, we can start modifying the existing code.

4. Refactor the code

When refactoring the code, you need to follow some principles:

• Retain the original functions: For those who want to modify The code must retain its original functionality. Only by retaining the original functions can the code have a certain degree of robustness and stability.
• Preserve code readability: When you refactor code using new methods or techniques, make sure the new code is more readable. This will help make future maintenance and modifications less difficult.
• Preserve reusability: The goal of refactoring is to streamline and optimize the code. However, you need to focus on code reusability. There is no need to duplicate code, and code reuse allows for better program development and maintenance.
• Preserve code compatibility: Refactoring the code may affect the compatibility of the program, such as interaction with other modules, data structure migration, etc. When refactoring code, you need to be backwards compatible and minimize conflicts with other modules.

5. Test the code

Refactoring the code does not mean you have solved all the problems. Testing your code will help you ensure that your code still runs as expected and that no new bugs were introduced during code refactoring. In order to test the results of code refactoring, you can add some automated unit tests to each refactored part to verify that the code runs as expected.

6. Tidy up the code

After completing the refactoring of the code, it will take extra time to tidy up the code. This can include adjusting the formatting of the code to make it cleaner and more readable; removing redundant code to make the code more streamlined; and adding necessary, clear guidance in comments to better understand the code.

In short, it is very necessary to reconstruct the C code. Through refactoring, you can clearly understand and improve code quality, thereby improving code reusability and maintainability and improving program performance. Of course, this requires good thinking habits and skills, and you must gradually improve your coding abilities through practice.

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