C ++:为什么使用".hh"作为C ++头文件的扩展名 [英] C++: Reason why using ".hh" as extension for C++ header files

问题描述

我想知道为什么我们使用".hh"作为C ++头文件的扩展名，而不是仅仅使用".h".

I would like to know why we use ".hh" as extension for C++ header files instead of using just ".h".

头文件已经过预处理，预处理器甚至不在乎头文件的扩展名.因此，即使我创建了带有扩展名".qwe"(test.qwe)的头文件.然后，为什么要使用".hh"作为C ++头文件的扩展名.

The header files are preprocessed and the preprocessor doesn't even care about the extension of the header file. So, even if I create a header file with an extension ".qwe" (test.qwe). Then, why to use ".hh" as extension for C++ header files.

有人说，我们使用".cc"作为C ++文件的扩展名以区别于C文件(其扩展名为".c")，同样，我们也使用".hh"作为C ++头文件的扩展名，与C头文件(扩展名为".h")有所区别.我认为这不是正当的理由.

Some say, we are using ".cc" as extension for C++ files to differentiate from C files (which has an extension ".c"), likewise we are using using ".hh" as extension for C++ header files to differentiate from C header files (which has an extension ".h"). I don't think this to be a valid reason.

有人知道这样命名的原因吗?

Does anyone know the reason for naming in such a way?

推荐答案

有人说，我们使用".cc"作为C ++文件的扩展名，以区别于C文件(具有扩展名".c")，同样，我们使用".hh"作为C ++的扩展名头文件，以区别于C头文件(扩展名为".h").

这正是原因.只是为了区分CPP标头和C标头.

That is exactly the reason. It is just to differentiate CPP headers from C headers.

某些编程器和库(例如Boost)将.hpp用作CPP标头.我个人的选择是:

Some programmers and libraries, such as Boost, use .hpp for CPP headers. My personal choice is this:

• example.c
• example.cpp
• example.h
• example.h ++

即使它们都属于一个巨大的项目，您仍然可以弄清楚哪个是哪个.无需描述.

Even if they all belong to a huge project, you can still figure out which one is which. No description is needed.

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