oj（一）s

//定义一个复数类Complex，重载运算符“+”,“-”,“*”,“/”，//使之能用于复数的加、减、乘、除。运算符重载函数作为Complex类的成员函数。编写程序，分别求两个复数之和、差、积和商。#include <iostream>#include <iomanip>using namespace std;class Complex{public:    Complex();    Complex(double r,double i);    Complex operator+(Complex &c2);    Complex operator-(Complex &c2);    Complex operator*(Complex &c2);    Complex operator/(Complex &c2);    void display();private:    double real;    double imag;};/* C++代码 */Complex::Complex(){}Complex::Complex(double r,double i){    real=r;    imag=i;}Complex Complex::operator+(Complex &c2){    return Complex(this->real+c2.real,this->imag+c2.imag);}Complex Complex::operator-(Complex &c2){    return Complex(this->real-c2.real,this->imag-c2.imag);}Complex Complex::operator*(Complex &c2){    return Complex(this->real*c2.real-this->imag*c2.imag,this->imag*c2.real+this->real*c2.imag);}Complex Complex::operator/(Complex &c2){    return Complex((this->real*c2.real+this->imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag),(this->imag*c2.real-this->real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag));}void Complex::display(){    cout<<"("<<real<<","<<imag<<"i)"<<endl;}//****************int main(){    double real,imag;    cin>>real>>imag;    Complex c1(real,imag);    cin>>real>>imag;    Complex c2(real,imag);    cout<<setiosflags(ios::fixed);    cout<<setprecision(2);    Complex 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();    return 0;}

结果：