error C2804: binary 'operator +' has too many parameters (compiling with VC 120)

user_4914757 0
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Writing my own vector class (for a game engine) and overloading '+' operator in Visual Studio 2013 CPlusPlus project (using VC runtime 120), it is throwing me compiler error:

Error: too many parameters for this operator function.

Code snippet from Vector.hpp file below.

Vector.hpp

class Vector
{
private:
    double i;
    double j;
    double k;
public:
    Vector(double _i, double _j, double _k)
    {
        i = _i;
        j = _j;
        k = _k;
    }

    Vector& operator+=(const Vector& p1)
    {
        i += p1.i;
        j += p1.j;
        k += p1.k;
        return *this;
    }

    //Some other functionality...

    Vector operator+(const Vector& p1, Vector& p2) //Error is thrown here...
    {
        Vector temp(p1);
        return temp += p2;
    }
};

enter image description here

What am I doing wrong here? Don't want to make my operator overload non-member function.

operator-overloading operators c++
2 Answers

one more possibility is by using the friend keyword.

friend Vector operator+(const Number& n1, const Number& n2)
    {
        Vector temp(n1);
        temp+=n2;
        return temp;
    }
user_23260070
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