欧美伊人久久,女女同性精品视频,免费成人激情视频

預編譯輸出的行標志

調用預編譯器cpp預編譯main.cpp生成main.i文件：
   $cpp main.cpp > main.i
或者：
   $gcc -E main.cpp > main.i

生成的行號標志中有如下格式的：
   # 1 “/usr/include/features.h” 1 3 4
表示下面的內容是由某個文件的第幾行產生的。
但是最后面的幾個數字是什么意思？看不出來是什么。

查到的結果是：http://tigcc.ticalc.org/doc/cpp.html

Source file name and line number information is conveyed by lines of the form

# linenum filename flags

These are called linemarkers. They are inserted as needed into the output (but never within a string or character constant). They mean that the following line originated in file filename at line linenum. filename will never contain any non-printing characters; they are replaced with octal escape sequences.

After the file name comes zero or more flags, which are 1, 2, 3, or 4. If there are multiple flags, spaces separate them. Here is what the flags mean:

1    This indicates the start of a new file.
2    This indicates returning to a file (after having included another file).
3    This indicates that the following text comes from a system header file, so certain warnings should be suppressed.
4    This indicates that the following text should be treated as being wrapped in an implicit extern "C" block.

posted on 2010-09-15 10:53 金慶閱讀(592) 評論(0) 編輯收藏引用所屬分類: 1. C/C++ 、4. Linux/Unix

只有注冊用戶登錄后才能發表評論。


相關文章: How are dtLinks created in NavMesh C++ parameter passing rules Naming Conventions for Accessors Visual Studio 2019 Compiler Hangs Fbx File Format Identifier 查找內存錯誤 std::thread 中的異常會丟失調用棧用賦值代替 protobuf CopyFrom() vs2017 linux 編譯輸出改成 vs 格式為 LiteIDE 添加選中標記

網站導航: 博客園 IT新聞 BlogJava 博問 Chat2DB 管理

青青草原综合久久大伊人导航_色综合久久天天综合_日日噜噜夜夜狠狠久久丁香五月_热久久这里只有精品

金慶的專欄

公告

留言簿(12)

隨筆分類(502)

隨筆檔案(423)

相冊

搜索

積分與排名

最新評論

閱讀排行榜

評論排行榜