.cc 和 .cpp 文件后缀有什么区别？
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What is the difference between .cc and .cpp file suffix?
提问by lv_laker
What is the difference between .ccand .cppfile extensions?
.cc和.cpp文件扩展名有什么区别？
From Google, I learned that they are both from the C++ language, but I am unsure of differences between them.
从谷歌，我了解到它们都来自 C++ 语言，但我不确定它们之间的区别。
回答by James Kanze
Conventions.
公约。
Historically, the suffix for a C++ source file was .C.
This caused a few problems the first time C++ was ported
to a system where case wasn't significant in the filename.
过去，C++ 源文件的后缀是.C. 这在第一次将 C++ 移植到文件名中大小写不重要的系统时引起了一些问题。
Different users adopted different solutions: .cc,
.cpp, .cxxand possibly others. Today, outside of the Unix
world, it's mostly .cpp. Unix seems to use .ccmore often.
不同的用户采用了不同的解决方案：.cc，
.cpp，.cxx可能还有其他解决方案。今天，在 Unix 世界之外，它主要是.cpp. Unix 好像用的.cc比较多。
For headers, the situation is even more confusing: for whatever
reasons, the earliest C++ authors decided not to distinguish
between headers for C and for C++, and used .h.
对于头文件，情况更令人困惑：无论出于何种原因，最早的 C++ 作者决定不区分 C 和 C++ 的头文件，并使用.h.
This doesn't cause any problems if there is no C in the project, but when you
start having to deal with both, it's usually a good idea to
distinguish between the headers which can be used in C (.h)
and those which cannot (.hhor .hpp).
如果项目中没有 C，这不会导致任何问题，但是当您开始不得不同时处理这两者时，通常最好区分 C 中可以使用的头文件 ( .h) 和不能使用的头文件(.hh或.hpp）。
In addition, in C++, a lot of users (including myself) prefer keeping the template
sources and the inline functions in a separate file. Which,
while strictly speaking a header file, tends to get yet another
set of conventions (.inl, .tccand probably a lot of
others).
此外，在 C++ 中，很多用户（包括我自己）更喜欢将模板源和内联函数保存在单独的文件中。其中，虽然严格来说是头文件，但往往会得到另一组约定（.inl，.tcc可能还有很多其他约定）。
In the case of headers it makes absolutely no difference to the compiler.
在头文件的情况下，它对编译器绝对没有区别。
In the case of source files different endings will cause the compiler to assume a different
language. But this can normally be overridden, and I used .ccwith VC++ long before VC++ recognized it as C++.
在源文件的情况下，不同的结尾将导致编译器采用不同的语言。但这通常可以被覆盖，并且我.cc在 VC++ 将其识别为 C++ 之前很久就使用了 VC++。
回答by Alon Gubkin
There is no difference. They're exactly the same.
没有区别。他们完全一样。
回答by Dentoid
Technically for the compiler there is no difference. However, some compilers and/or build systems will guess how to compile your files based on the extension and may or may not detect "cc" (or "cpp" but that is more rare I guess) as a c++ file.
从技术上讲，编译器没有区别。但是，一些编译器和/或构建系统会根据扩展名猜测如何编译您的文件，并且可能会或可能不会将“cc”（或“cpp”，但我猜这更罕见）检测为 c++ 文件。
回答by Bodhi
Actually it all depends on what you and your compiler prefer. There is no difference between them at all.
实际上，这完全取决于您和您的编译器的喜好。它们之间完全没有区别。
