/* c语言头文件:cExample.h */#ifndefC_EXAMPLE_H#defineC_EXAMPLE_Hexternintadd(intx, inty);#endif/* c语言实现文件:cExample.c */#include"cExample.h"intadd(intx,inty ){returnx + y; }// c++实现文件,调用add:cppFile.cppextern"C"{#include"cExample.h"}intmain(intargc,char* argv[]...
意味着全部函数/变量被导入 #define MYLIBAPI extern "C" __declspec(dllimport) #endif // 这里定义任何的数据结构和符号 // 定义导出的变量(避免导出变量) MYLIBAPI int g_nResult; // 定义导出函数原型 MYLIB
extern "C"的作用是让 C++ 编译器将extern "C"声明的代码当作 C 语言代码处理,可以避免 C++ 因符号修饰导致代码不能和C语言库中的符号进行链接的问题。 extern "C" 使用 #ifdef__cplusplusextern"C"{#endifvoid*memset(void*,int,size_t);#ifdef__cplusplus}#endif struct 和 typedef struct C中 // cty...
断言,是宏,而非函数。assert 宏的原型定义在<assert.h>(C)、<cassert>(C++)中,其作用是如果它的条件返回错误,则终止程序执行。如:assert( p != NULL );sizeof()sizeof 对数组,得到整个数组所占空间大小。 sizeof 对指针,得到指针本身所占空间大小。
In C++, however,staticis also used to define class attributes (shared between all objects of the same class) and methods. In C there are no classes, so this feature is irrelevant. 79down vote Short answer ...it depends. Static defined local variables do not lose their value between functi...
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KUWAIT CITY, March 12 (Xinhua) -- The Gulf Cooperation Council (GCC) region makes continuous progress in attracting foreign capital to become a preferred investment destination in the emerging markets, a Kuwait's investment expert said. "For the next phase, outlook of the GCC region remains san...
Besides providing opportunities to Pakistani students, Chinese universities are going the extra mile to improve the education quality for the students to meet the needs of the two countries' major projects like CPEC and other vital fields, he said. ...
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"The CSTO takes a serious approach to the development of effective and mutually beneficial cooperation with the SCO. We are always open to filling it with practical matters," Khachaturov told Chinese reporters in a recent interview. He said the relations between the CSTO and the SCO are define...