What type of constructor / method is used here?

Question

I was looking for a way to calculate the addition of complex numbers and I saw this example but there is a part which I don't understand. this is the whole code for this class:

  class Complex
    {


       public  int real, imaginary;

        public Complex()
        {

        }

        public Complex(int tempReal , int tempImaginary)
        {
            real = tempReal;
            imaginary = tempImaginary;
        }

        public Complex addComp(Complex C1 , Complex C2)
        {
            Complex temp = new Complex();
            temp.real = C1.real + C2.real;
            temp.imaginary = C1.imaginary + C2.imaginary;

            return temp;

        }


}

The part where it is written :

 public Complex addComp(Complex C1 , Complex C2)

My question is first is this a constructor or method? and my next question is why is Complex written behind addComp? how is that possible and what is the point of it?

Answer 1

addComp is a method, but a very badly written one!

Observations:

• addComp should either be static and take two parameters, or be non-static and take one; an instance method shouldn't ignore the this value, most times
• addComp should almost certainly be the binary + operator, which would be static in the above scenario (C# allows you to overload many operators, including +)
• Complex should probably be a readonly struct, not a class - with suitable operators and overloads, support for IEquatable<Complex>, etc
• real and imaginary should be properties, not public fields