Complex Numbers in C++ WIP

complex.h

#ifndef COMPLEX_H_INCLUDED
#define COMPLEX_H_INCLUDED

struct ComplexNumber{
    double realPart;
    double imaginaryPart;

    ComplexNumber operator+(ComplexNumber k)
    {
        this.realPart += k.realPart;
        this.imaginaryPart += k.imaginaryPart;
        return this;
    }

    ComplexNumber operator-(ComplexNumber k)
    {
        this.realPart -= k.realPart;
        this.imaginaryPart -= k.imaginaryPart;
        return this;
    }

    ComplexNumber operator*(ComplexNumber k)
    {
        this.realPart = (this.realPart * k.imaginaryPart) - (k.realPart * this.imaginaryPart);
        this.imaginaryPart = (k.realPart * this.imaginaryPart) + (this.realPart * k.imaginaryPart);
        return this;
    }

    ComplexNumber operator/(ComplexNumber k)
    {
        this.realPart = ((this.realPart * k.realPart) + (this.imaginaryPart * k.imaginaryPart)) / (pow(k.realPart, 2)+pow(k.imaginaryPart, 2));
        this.imaginaryPart = ((this.imaginaryPart * k.realPart) + (this.realPart * k.imaginaryPart)) / (pow(k.realPart, 2)+pow(k.imaginaryPart, 2));
        return this;
    }
}


#endif // COMPLEX_H_INCLUDED