在这个跟踪例子中的第一行中有对宏展开初始化时的位置的引用。
The first line in this tracing example contains the reference to the position, from where the macro expansion was initiated.
生成的跟踪输出非常详细，可以跟踪实际的宏展开过程中的每一步。
The generated trace output is very verbose, but allows to follow every step of the actual macro expansion process.
在此过程中，执行所有的预处理器指令，执行宏展开，并移除注释。
In the process, all preprocessor directives are carried out, macro expansions are performed, and comments are removed.
应用推荐