friend A& operator++(A& a)//前++ { a.data += 10; return a; }我想问的是,前面的friend A& 这个引用有什么意义吗?加和不加有什么区别吗?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 17:31:03
![friend A& operator++(A& a)//前++ { a.data += 10; return a; }我想问的是,前面的friend A& 这个引用有什么意义吗?加和不加有什么区别吗?](/uploads/image/z/11884897-1-7.jpg?t=friend+A%26+operator%2B%2B%28A%26+a%29%2F%2F%E5%89%8D%2B%2B+%7B+a.data+%2B%3D+10%3B+return+a%3B+%7D%E6%88%91%E6%83%B3%E9%97%AE%E7%9A%84%E6%98%AF%2C%E5%89%8D%E9%9D%A2%E7%9A%84friend+A%26+%E8%BF%99%E4%B8%AA%E5%BC%95%E7%94%A8%E6%9C%89%E4%BB%80%E4%B9%88%E6%84%8F%E4%B9%89%E5%90%97%3F%E5%8A%A0%E5%92%8C%E4%B8%8D%E5%8A%A0%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%E5%90%97%3F)
friend A& operator++(A& a)//前++ { a.data += 10; return a; }我想问的是,前面的friend A& 这个引用有什么意义吗?加和不加有什么区别吗?
friend A& operator++(A& a)//前++ { a.data += 10; return a; }
我想问的是,前面的friend A& 这个引用有什么意义吗?加和不加有什么区别吗?
friend A& operator++(A& a)//前++ { a.data += 10; return a; }我想问的是,前面的friend A& 这个引用有什么意义吗?加和不加有什么区别吗?
因为参数是引用,修改会作用于原对象,所以这里是否返回引用A&是一样的,
friend A& operator++(A& a)和friend void operator++(A& a)效果一样.
friend是修饰自加重载符的,不是修饰A&的,如果A的成员data声明为private的话,这里friend是必须的.
friend istream &operator>>
friend ostream & operator
friend Point operator +(const Point& a,const Point& b); 我是新手,不懂,越详细越好.
A.operator+(B)
operator
还有请问friend istream& operator >>(istream &,zhui &); 里istream是什么
friend istream&operator>>(istream &in,Point &p) ;friend istream&operator >>(istream &in,Point &p) ; 这里的&符号又是什么意思啊
'operator =' must be a member啥意思#includeclass String{public:String(char *str=NULL);friend void operator=(String&a,String&b);void show();private:char *name;};int main(){return 0;}编译提示:error C2801:'operator =' must be a member
friend A& operator++(A& a)//前++ { a.data += 10; return a; }我想问的是,前面的friend A& 这个引用有什么意义吗?加和不加有什么区别吗?
She is a keyboard operator变为复数
I'm a keyboard operator.汉语怎莫说?
A covert front-line operator.啥意思?
C++错误之INTERNAL COMPILER ERROR源代码是:#includeusing namespace std;class complex{ float real,image;public: complex(float r=0,float i=0) {real=r;image=i;} void print(); friend complex operator+(complex a,complex b); friend complex operator-
is keyboard operator Tom's father a拼成句子
c++运算符重载为何complex operator+(complex &a,complex &b)也对,complex operator+(complex &a)也对
i am a keyboard operator.i operate keyboard.这么说行吗?看新概念看到的keyboard operator
''operator''是什么意思?
operator assist