如何查看 Visual C++ 预处理器的输出？
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How can I see the output of the Visual C++ preprocessor?
提问by Benjamin Pollack
I want to see the output of the Visual C++ Preprocessor on my code -- i.e., the equivalent of gcc -E. For the life of me, I cannot find the relevant compiler switch. How do I accomplish this?
我想在我的代码上看到 Visual C++ 预处理器的输出——即，相当于gcc -E. 对于我的生活，我找不到相关的编译器开关。我该如何实现？
采纳答案by Abhijeet Rastogi
cl.exe, the command line interface to Microsoft Visual C++, has three different options for outputting the preprocessed file (hence the inconsistency in the previous responses about Visual C++):
cl.exe，Microsoft Visual C++ 的命令行界面，具有三个不同的输出预处理文件的选项（因此与之前关于 Visual C++ 的响应不一致）：
/E: preprocess to stdout(similar to GCC's -E option)/P: preprocess to file/EP: preprocess to stdout without #line directives
/E:预处理到标准输出（类似于 GCC 的 -E 选项）/P:预处理到文件/EP:在没有#line 指令的情况下预处理到标准输出
(copied directly from https://stackoverflow.com/a/277362/3279)
回答by Xeo
Project properties -> C/C++ -> Preprocessing -> Preprocess to a file: Yes (/P)
项目属性 -> C/C++ -> Preprocessing -> Preprocess to a file: Yes (/P)
The files will be called .i and will be created in the build directory.
这些文件将被称为 .i 并将在构建目录中创建。
Also see the msdn page.
另请参阅msdn 页面。
