编译器内设的宏定义如何用？

forthlab · 发表于 2015-12-28 12:01:45

看手册，编译器有很多预设的宏定义，试了一下，编译出错。请问如何用？
文档部分内容如下：

Predefined Macros
The compiler preprocessor has predefined macros (some refer to these as predefined
symbols). The compiler simulates variable definitions that describe the compile-time
environment and properties of the target processor.
This chapter lists the predefined macros that all CodeWarrior compilers make available.
• __COUNTER__
• __cplusplus
• __CWCC__
• __embedded_cplusplus
• __FILE__
• __func__
• __FUNCTION__
• __ide_target()
• __LINE__
• __MWERKS__
• __PRETTY_FUNCTION__
• __profile__
• __STDC__
• __TIME__

-----------------------------------------
__COUNTER__
Preprocessor macro that expands to an integer.
Syntax
__COUNTER__
Remarks
The compiler defines this macro as an integer that has an initial value of 0
incrementing by 1 every time the macro is used in the translation unit.

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