C++?????C????

?C++??????

#ifndef MY_HANDLE_H#define MY_HANDLE_Hextern "C" {    typedef unsigned int result_t;    typedef void* my_handle_t;    my_handle_t create_handle(const char* name);    result_t operate_on_handle(my_handle_t handle);    void close_handle(my_handle_t handle);}

?????????????C++??????????C?????

???????????

?C?????????

#ifndef MYLIB_H#define MYLIB_Hint add(int a, int b);  // ??????"extern "C"#endif

?C++?????extern "C"?

#include 
    
       // ??C?????extern "C" {    int add(int a, int b);}int main() {    return add(3, 5);}
    

?C????????

int add(int a, int b) {    return a + b;}

????C++??????

#include 
    
     extern "C" {    #include 
     
      }