CODEWITHSUNDEEP
c++operator-overloading
Dominick Piganell
Dominick Piganell

Reputation: 724

error: ambiguous overload for 'operator<<'

I'm getting this error when I'm trying to build my project:

Angle.cpp:466: error: ambiguous overload for 'operator<<' in '(+out)-
>std::basic_ostream<_Elem, _Traits>::operator<< [with _Elem = char, 
_Traits = std::char_traits<char>](((const Angle*)this)->Angle::getDegrees())
<< "\37777777660"'

I've done some research on it and it looks like I have a wrong method header, but I'm new to cpp and don't know how to fix this error.

Here's the .h:

#include "OutputOps.h"
// End user added include file section

#include <vxWorks.h>
#include <ostream>
class Angle {

public:
// Default constructor/destructor
~Angle();

// User-defined methods
//
// Default Constructor sets Angle to 0.
Angle();
...
// Returns the value of this Angle in degrees.
double getDegrees() const;
....
// Prints the angle to the output stream as "x°" in degrees
void output(std::ostream& out) const;

...
private:
...
double radians;
static const double DEGREES_PER_RADIAN /* = 180.0 / PI */;    
};

#endif // ANGLE_H

And here's the method:

#include "MathUtility.h"
#include <cmath>
// End user added include file section

#ifndef Angle_H
#include "Angle.h"
#endif

//
// Prints the angle to the output stream as "x°" in degrees
void Angle::output(std::ostream& out) const
{
    out << getDegrees() << "°";
}
//
// Returns the value of this Angle in degrees.
double Angle::getDegrees() const
{
return radians * DEGREES_PER_RADIAN;
}

Upvotes: 2

Views: 1612

Answers (1)

Luchian Grigore
Luchian Grigore

Reputation: 258668

My guess is that the problem lies with the degree sign, which isn't an ascii character.

Try instead:

wcout <<  getDegrees() << L"\u00B0";

Upvotes: 2

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