重载"<<" ostream不明确 VS2010

[wgqyjh]

code :

#include<iostream>
using namespace std;


class Point
{
public:
Point(int x, int y):a(x),b(y){}
friend ostream &operator<<(std::ostream &stream,Point &Pone);
private:
int a;
int b;
}

ostream &operator <<(ostream &stream,Point &Pone)
{
stream << Pone.a << "," << Pone.b << endl;
return stream;
}
ostream 不明确 operator无法重载按返回类型区分的函数。

[wgqyjh]

发出来就发现哪错了。。类后边的；忘了。

[漫步者、]

分号忘了加了