选项

• -dCHARS

  CHARS前面不能有空格

  • M

    处理#define指令

  • D(常用)

    Like M except in two respects: it does not include the predefined macros, and it outputs both the #define directives and the result of preprocessing.
    Both kinds of output go to the standard output file.

  • I

    Output #include directives in addition to the result of preprocessing.

参考

1. cpp输出格式