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ÎÄÖиø³öµÄÊÇÍêÕûµÄ,¾ßÌåµÄ,µ«ÓÖ×î»ù±¾×î¼òµ¥µÄʵÏÖ,ÖÁÓÚÀíÂÛÐԵĶ«Î÷ÔÚÍøÉϺÜÈÝÒ×ËÑË÷µÄµ½.
Ò».ͨ¹ý´¦Àí±»µ÷ÓõÄCÍ·Îļþ
a.h:
#ifndef __A_H
#define __A_H
#ifdef __cplusplus
extern "C" {
#endif
int ThisIsTest(int a, int b);
#ifdef __cplusplus
}
#endif
#endif
a.c:
#include "a.h"
int ThisIsTest(int a, int b) {
  return (a + b);
}
aa.h:
class AA {
  public:
      int bar(int a, int b);
};
aa.cpp:
#include "a.h"
#include "aa.h"
#include "stdio.h"
int AA::bar(int a, int b){
    printf("result=%d\n", ThisIsTest(a, b));
    return 0;
}
main.cpp:
#include "aa.h"
int main(int argc, char **argv){
  int a = 1;
  int b = 2;
  AA* aa = new AA();
  aa->bar(a, b);
  delete(aa);
  return(0);
}
Makefile:
all:
        gcc -Wall -c a.c -o a.o
        gcc -Wall -c aa.cpp -o aa.o
        gcc -Wall -c main.cpp -o main.o
        g++ -o test *.o
¶þ. ͨ¹ý´¦Àíµ÷ÓõÄC++Îļþ
»Ö¸´a.hÎļþΪһ°ãÐÔCÍ·Îļþ,ÔÚaa.cppÎļþÖÐextern°üº¬a.hÍ·Îļþ»òº¯Êý.
a.h:
#ifndef __A_H
#define __A_H
int ThisIsTest(int a, int b);
#endif
aa.cpp:
extern "C"
{
    #include "a.h"
}
#include "aa.h"
#include "stdio.h"
int AA::bar(int a, int b){
    printf("result=%d\n", ThisIsTest(a, b));
    return 0;
}
or
aa.cpp:
#include "aa.h"
#include "stdio.h"
extern "C"
{
    int ThisIsTest(int a, int b);
}
int AA::bar(int a, int b){
    printf("result=%d\n", ThisIsTest(a, b));
    return 0;
}


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