复数加、乘、除、减问题- C++ -运算符重载

class Complex {
private:
    double real;
    double imag;
public:
    Complex(double r = 0, double i = 0) : real(r), imag(i) {}
    Complex operator+(const Complex& c) {
        return Complex(real + c.real, imag + c.imag);
    }
};

class Complex {
private:
    double real;
    double imag;
public:
    Complex(double r = 0, double i = 0) : real(r), imag(i) {}
    Complex operator*(const Complex& c) {
        double r = real * c.real - imag * c.imag;
        double i = real * c.imag + imag * c.real;
        return Complex(r, i);
    }
};

class Complex {
private:
    double real;
    double imag;
public:
    Complex(double r = 0, double i = 0) : real(r), imag(i) {}
    Complex operator/(const Complex& c) {
        double denominator = c.real * c.real + c.imag * c.imag;
        double r = (real * c.real + imag * c.imag) / denominator;
        double i = (imag * c.real - real * c.imag) / denominator;
        return Complex(r, i);
    }
};

class Complex {
private:
    double real;
    double imag;
public:
    Complex(double r = 0, double i = 0) : real(r), imag(i) {}
    Complex operator-(const Complex& c) {
        return Complex(real - c.real, imag - c.imag);
    }
};