.cc vs. .cpp: Which C File Extension Should You Use?

C Code File Extensions: A Guide to .cc vs. .cpp

C developers often encounter code files with the extensions .cc or .cpp. This article delves into the differences between these extensions and provides insights into best practices.

File Extensions and Their Usage

C code files can have either the .cc or .cpp extension. Both of these extensions represent C source code that can be compiled into an executable file. Historically, .cc was commonly used for C code in Smalltalk-derived languages, such as Objective-C. However, over time, .cpp has become the more prevalent extension for C source files.

Google's Style Guide Preference

The Google C Style Guide recommends using the .cc extension for C code files. This is primarily due to the fact that Google's C codebase originated from Objective-C, where .cc was the standard extension.

Modern Practices and Platform Considerations

While Google's style guide favors .cc, there is no definitive preference between .cc and .cpp in modern C development. Both extensions are widely accepted by C compilers. Therefore, the choice between the two extensions is often a matter of personal preference or team conventions.

Conclusion

Ultimately, the choice between .cc and .cpp for C code files is largely immaterial. Both extensions are interchangeable and C compilers can handle either format effectively. Developers should choose the extension that aligns with their personal preferences or team conventions, allowing them to focus on the more important aspects of C programming.

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