我们需要能够引入字面符号,可以供调用宏的开发人员使用。
We need a way to introduce literal symbols which can be used by the developer invoking the macro.
清单7给出的宏定义使用这些函数定义了算术符号。
Listing 7 shows the macro definition to define math symbols using these functions.
/DBUILDING_DLL 为这个特定的构建过程定义了 PRINT_API 宏,以便从这个 DLL 导出 printHello 符号。
exe or .obj.) /DBUILDING_DLL defines the PRINT_API macro for this particular building process so that the printHello symbol is exported from this DLL.
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