对=重载时,这么写为什么是错的?
class Point
{private:
int x,y,z;
public:
Point(int m_x=0,int m_y=0,int m_z=0){x=m_x;y=m_y;z=m_z;}
friend Point operator =(const Point &p1,const Point &p2);
};
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对=重载时,这么写为什么是错的? class Point {private: int x,y,z; public: Point(int m_x=0,int m_y=0,int m_z=0){x=m_x;y=m_y;z=m_z;} friend Point operator =(const Point &p1,const Point &p2); };