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void foo(int x, int y);
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extern "C" {
void foo(int, int);
void bar(int, int);
}
extern "C" µäÐ͵ÄÓ÷¨ÊÇÀàËÆÏÂÃæµÄ¸ñʽ°üº¬ÔÚÒ»¸öÍ·ÎļþÖУº
#ifdef __cplusplus
extern “C” {
#endif
void fun(void);
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#ifdef __cplusplus
}
#endif
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/* C++ needs to know that types and declarations are C, not C++.  */
#ifdef  __cplusplus
# define __BEGIN_DECLS  extern "C" {
# define __END_DECLS    }
#else
# define __BEGIN_DECLS
# define __END_DECLS
#endif
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C Runtime LibraryÀ´Àú, API, MFC, ATL¹ØÏµ

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