[C++ 筆記] 朋友函式(Friend Function)、朋友類別(Friend Class)
Published in
1 min readOct 29, 2018
兒子不能用Private,朋友可以
class Ball;
int compare(Ball&, Ball&);
class Ball {
public:
....
// 宣告朋友類別
friend class SomeClass;
// 宣告朋友函式
friend int compare(Ball&, Ball&);
private:
....
};