gcc -c /home/dramalife/note/70-gcc_gnu_compiler_collection/tips/Q_can_define_var_at_header/main.c -o /home/dramalife/note/70-gcc_gnu_compiler_collection/tips/Q_can_define_var_at_header/main.o -D__INIT_THE_VAR__ -U__VAR_VAULE_ZERO__ gcc -c /home/dramalife...
gcc -c /home/dramalife/note/70-gcc_gnu_compiler_collection/tips/Q_can_define_var_at_header/main.c -o /home/dramalife/note/70-gcc_gnu_compiler_collection/tips/Q_can_define_var_at_header/main.o -D__INIT_THE_VAR__ -U__VAR_VAULE_ZERO__ gcc -c /home/dramalife/note/70-gcc_gnu_c...
A variable can be declare/define in a C Header without any kind of compilational/ logical errors. But it is against the coding specifications and it is not normally practiced. If proper Multiple inclusion protection macro is used, then there will be no problem even the header is included in...
I use a startup file which implements a configuration wizard. In this wizar 2 parameters (stack_size and Heap_size) are defined. But I want to define a variable in a header file and use that value in the assembly file instead. Therefore I try to include the file "sys_lpc.h" But wh...
c ... */int32_t my_variable; /* Actually defined in source */不要把.c文件包含在另一个.c文件中.c文件应该首先包含相应的.h文件，然后是其他文件，除非另有明确的必要在头文件中不包含模块私有声明头文件示例(示例中没有license)/* License comes here */#ifndef TEMPLATE_HDR_H#define TEMPLATE_...
In C programming, header files serve as a way to declare function prototypes, types, and macros that can be shared across multiple source files. The syntax of header files typically consists of the following elements: #ifndef HEADER_NAME_H#define HEADER_NAME_H // Declarations and definitions ...
如果您在先行編譯頭檔之前#include放置任何預處理器指示詞,例如#include、 #define或#pragma,就會發生此錯誤。 如果您的原始程序檔使用先行編譯頭檔(也就是使用編譯程式選項進行編譯 /Yu),則會忽略先行編譯頭檔之前的所有預處理器指示詞。 此範例無法編譯,因為 cout 和endl 定義於標頭中 <iostream> ,因為其包含在...
中文对照:(编译错误)#define语法错误分析:例如“#define”后缺少宏名,例如“#define” 8、error C2008: 'xxx' : unexpected in macro definition 中文对照:(编译错误)宏定义时出现了意外的xxx 分析:宏定义时宏名与替换串之间应有空格,例如“#define TRUE"1"” 9、error C2009: reuse of macro formal 'identi...
分析:宏定义时宏名与替换串之间应有空格,例如“#define TRUE"1"” 9、error C2009: reuse of macro formal 'identifier' 中文对照:(编译错误)带参宏的形式参数重复使用 分析:宏定义如有参数不能重名,例如“#define s(a,a) (a*a)”中参数a重复 10、error C2010: 'character' : unexpected in macro form...
STATIC_DEFINE:这是用于当也从相同源代码编译静态库时使用的宏的名称。 NO_DEPRECATED_MACRO_NAME:这设置用于排除编译中废弃代码的宏的名称。 DEFINE_NO_DEPRECATED:这指示 CMake 生成预处理器代码,以排除编译中的废弃代码。 在GNU/Linux 上使用 GNU 编译器时,CMake 将生成以下messageExport.h导出头文件: ...