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What's wrong with this piece of code?

xz
It's just a comman operator<<

friend std::ostream& operator<<(std::ostream& os, const Vertex& v){
return os << "(" << v.getX() << ", " << v.getY()<< ")";
};

The compiling error is:

Vertex.h: In function 'std::ostream& operator<<(std::ostream&, const
Vertex
&)':
Vertex.h:39: error: no match for 'operator<<' in 'os << "("'
Am I missing some subtle mistake there?
Mar 13 '08 #1
1 1237
xz
Oh, I figured it out.....
Mar 13 '08 #2

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