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#ifdef __cplusplus
extern "C" {
#endif
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#ifdef __cplusplus
}
#endif


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Keil C51 vs ±ê×¼C

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extern "C"

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      ×î½üÒ»Ö±ÔÚ¿´Andrew KoeningдµÄÊé¼®£¬¿ÉÒÔ˵ѧϰC/C++»òÕß´ÓÊÂÕâ·½ÃæµÄ¿ª·¢µÄÈËÔ±·Ç³£ÖµµÃÒ»¿´µÄÊé¼®£¬ÕâÀïÎÒÍÆ¼ö¿´¿´¡¶CÏÝÚåÓëȱÏÝ¡·Óë¡¶C/C++³Á˼¼¡·¡£
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#include "iostream"
#include "cmath"
using namespace std;
int main(){
double a,b,c;
double delta,x1,x2;
int sign,stop;
cout<<"ÊäÈë3¸öϵÊýa(a!=0),b,c"<<endl;
cin>>a>>b& ......
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