Thread: operator overloading

I have a vector class and I want to overload some operators for it, so I made the class like this:

Code:

class vec {
public:
  float x, y;
  vec(float setx = 0, float sety = 0) {
    set(setx,sety);
  }
  vec(vec& rhs) {
    x = rhs.x;
    y = rhs.y;
  }
  vec operator=(vec& rhs) {
    x = rhs.x;
    y = rhs.y;
    return rhs;
  }
  vec operator+(vec& rhs) {
    vec ret(x+rhs.x,y+rhs.y);
    return ret;
  }
};

(with other stuff too) But when I try to compile this:

Code:

  vec a, b, c;
  a = b + c;

I get errors about that operator not existing like:

7 C:\Dev-Cpp\antigrav\main.cpp no match for 'operator=' in 'a = vec::operator+(vec&)(((vec&)(&c)))'

I was totally sure this was how to overload operators, but now I'm not so sure. What am I doing wrong?