方案一

//1）方案一：请用类的成员函数完成运算符的重载；*/#include <iostream>using namespace std;class Complex{public:Complex(){real=0;imag=0;}Complex(double r,double i){real=r;imag=i;}Complex operator+ (Complex &c1);Complex operator- (Complex &c1);Complex operator* (Complex &c1);    Complex operator/ (Complex &c1);  void display();private:double real;double imag;};//下面定义成员函数void Complex :: display( )    {      cout<<"("<<real<<","<<imag<<"i)"<<endl;  }  Complex Complex :: operator + (Complex &c1){return Complex(real + c1.real, imag + c1.imag);}Complex Complex :: operator - (Complex &c1){return Complex(real - c1.real, imag - c1.imag);}Complex Complex :: operator * (Complex &c1){return Complex(real * c1.real - imag * c1.imag, imag * c1.real + real * c1.imag);}Complex Complex :: operator / (Complex &c1){return Complex((real * c1.real + imag * c1.imag) / (c1.real * c1.real + c1.imag * c1.imag), (imag * c1.real - real * c1.imag) / (c1.real * c1.real + c1.imag * c1.imag));}int main(){const double d = 2;Complex c1(3,4), c2(5,-10), c3;cout << "c1=";c1.display();cout << "c2=";c2.display();c3 = c1 + c2;cout << "c1+c2=";c3.display();c3 = c1 - c2;cout << "c1-c2=";c3.display();c3 = c1 * c2;cout << "c1*c2=";c3.display();c3 = c1 / c2;cout << "c1/c2=";c3.display();system("pause");return 0;}