朋友類別函數：需做修改

#include
using namespace std;

class classfriend
{
public:
void setup(int power);};
class car
{
   private:
      int num;
      double gas;
};
void  classfriend::setup(int power)
{int motive=power;
car March;
March.num=200;
March.gas=20.0;
cout<<"--March--\n"<<"傳入為"<cout<<"Gas為"<}
int main( )
{ classfriend pow;
pow.setup(300);
return 0; }