#include <iostream>
#include <cmath>
using namespace std;
class Point;
class Manager
{
public:
void Myprint(const Point & another);
//Point operator +(Point & a,Point & b);
};
class Point
{
friend void Manager::Myprint(const Point & another);
//friend Point Manager::operator +(Point & a,Point & b);
public:
Point(int a=1,int b=2)
:m_x(a),m_y(b)
{
}
void func()
{
cout << "(" << this->m_x << "," << this->m_y << ")" << endl;
}
private:
int m_x;
int m_y;
};
void Manager::Myprint(const Point & another)
{
cout << "Myprint():(" << another.m_x << "," << another.m_y << ")" << endl;
}
//Point Manager::operator +(Point & a,Point & b)
//{
// a.m_x += b.m_x;
// a.m_y += b.m_y;
// return a;
//}
int main()
{
Point p1(3,4);
Manager m;
m.Myprint(p1);
return 0;
}
+号运算符的操作数为2,你在Manager里面重载的这个实际上有3个参数,有一个隐形的参数是this,操作数为3,所以会有问题。你要么在Point内部重载只有一个参数的成员函数,要么重载一个两个参数的非成员函数
因该是大写分号吧!
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