operator overloading

Question

I'm doing an exercise that asks to create a Complex class and to implement sum and sub operator as well as the == operator.
I'm confident with the first two, but I can't say the same for the latter.

Also, what would you answer to the question: does the class need an assignment operator and a deep copy operator?

class Complex {
public:
Complex():re (0), im(0){};

Complex(double r, double i): re(r), im(i){};

bool operator==(const Complex& right) {
bool result = true;
if(this != &right){
result = false;
}
return result;
}

Complex operator+(const Complex& op) {
return Complex(re + op.re, im + op.im);
}

Complex operator-(const Complex& op){
return Complex(re - op.re, im - op.im);
}

private:
double re;
double im;
};

Answer 1

Thank you guys!

Answer 2

the implementation of "Complex::operator==" will be something like this ( since both the real and imaginary parts need to be equal):
https://code.sololearn.com/cWKod0HB0uWD/#cpp

you don't need to create a copy constructor and assignment operator, C++ compiler creates a default copy constructor for each class which does a member-wise copy between objects if it is used and it’s deleted if a move operation is declared, but you need to define your own only if the object has pointers or any runtime allocation of the resource.

Answer 3

... Anyone?