You cannot use preprocessor macros with arguments as value definitions.

不能将具有参数的预处理器宏用作值定义。

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Static analysis tools for C and C++ programs may include a check on unused preprocessor macros.

C和c++程序静态分析工具可能包括检查未使用的预处理器宏。

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This is because the actual source code and the variable binding can change, based on the environment or the build time definitions of macros and preprocessor commands.

这是因为实际的源代码和变量绑定可以更改，这是建立在环境或者构建宏预处理程序指令的时间定义的基础上的。

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