macro function和macro的区别 function和macro的优缺点以及使用场景 总结 介绍 CMake简介 CMake是一个开源的跨平台构建工具,它可用于生成可定制的构建过程,如Makefiles、Visual Studio项目或Xcode项目。CMake使用CMakeLists.txt文件来描述构建过程,这些文件包含了构建项目所需的信息,包括源代码、库、头文件和可执行文件...
使用do-while(0)语句保护它typedefstruct {int32_t px, py;} point_t;point_t p; /* Define new point *//* Wrong implementation *//* Define macro to set point */#define SET_POINT(p, x, y) (p)->px = (x); (p)->py = (y) /* 2 statements. Last one should not implem...
Now, whenever our callback function is called, we allocate a task structure with the needed parameters and post it to our dedicated thread. Let's write it: #define THE_MACRO(type1, type2, val) type2 m_##val; #define THE_SEP #define MARSHAL_IN(method) \ struct CTaskGui_##method ...
Likewise, an identifier currently defined asa function-like macroshall not beredefined by another #define preprocessing directive unless the second definitionis a function-like macro definition that has the same number and spelling ofparameters, and the two replacement lists are identical. 问题2:宏的...
WriteFile fails with ERROR_INVALID_FUNCTION (0x1) Writing to the end of a file with CreateFile wstring to lpwstr xkeycheck.h and macro defined keywords XRANDR for Windows XSD : error : The CodeDom provider type "Microsoft.VisualC.CppCodeProvider, CppCodeProvider could not be located. XSD :...
We can use macros to define the MIN and MAX functions in the C language. A macro is a code segment used to define variable values and functions. When we call a macro, it gets replaced by its value or function. For example, we can define the value of a variable like PI, and when ...
所有的宏必须是全大写的,并带有下划线_字符(可选),除非它们被明确标记为function,将来可能会被常规函数语法替换 /* OK */ #define MY_MACRO(x) ((x) * (x)) /* Wrong */ #define square(x) ((x) * (x)) 总是用圆括号保护输入参数
Some command names require arguments; these make up the rest of the command line and must be separated from the command name by whitespace. For example,`#define'must be followed by a macro name and the intended expansion of the macro. ...
}/* When d should not be modified inside function, only data pointed to by d could be modified */voidmy_func(void*constd) { } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 当函数可以接受任何类型的指针时,总是使用void *,不要使用uint8_t *。函数在实现时必...
What is the meaning of this macro "#define __T(x) L ## x" What's the difference between a DLL's LIB and a Static Lib? where do I find the definition of the getch function return codes Where is _WIN64? where is #include <mutex>? Where should v initialize static variables, ...