[YTU]

xiaoxiao2021-02-28  160

题目描述

定义一个复数类Complex,重载运算符“+”,使之能用于复数的加法运算与输出操作。 (1)参加运算的两个运算量可以都是类对象,也可以其中有一个是实数,顺序任意。例如,c1+c2,d+c1,c1+d均合法(设d为实数,c1,c2为复数)。 (2)输出的算数,在复数两端加上括号,实部和虚部均保留两位小数,如(8.23+2.00i)、(7.45-3.40i)、(-3.25+4.13i)等。 编写程序,分别求两个复数之和、整数和复数之和,并且输出。

请在下面的程序段基础上完成设计: #include <iostream> #include <iomanip> using namespace std;

class Complex { public: Complex():real(0),imag(0) {} Complex(double r,double i):real(r),imag(i) {} Complex operator+(Complex &); Complex operator+(double &); friend Complex operator+(double&,Complex &); friend ostream& operator << (ostream& output, const Complex& c); private: double real; double imag; };

//将程序需要的其他成份写在下面,只提交begin到end部分的代码 //******************** begin ********************

//********************* end ******************** int main() { //测试复数加复数 double real,imag; cin>>real>>imag; Complex c1(real,imag); cin>>real>>imag; Complex c2(real,imag); Complex c3=c1+c2; cout<<"c1+c2="; cout<<c3;

//测试复数加实数 double d; cin>>real>>imag; cin>>d; c3=Complex(real,imag)+d; cout<<"c1+d="; cout<<c3;

//测试实数加复数 cin>>d; cin>>real>>imag; c1=Complex(real,imag); c3=d+c1; cout<<"d+c1="; cout<<c3;

return 0; }

输入

一个复数的实部和虚部,另一个复数的实部和虚部  一个复数的实部和虚部,一个实数 一个实数,一个复数的实部和虚部

输出

两个复数之和、复数和实数之和,实数和复数之和。

样例输入

3 4 5 -10 3 4 5 5 3 4

样例输出

c1+c2=(8.00-6.00i) c1+d=(8.00+4.00i) d+c1=(8.00+4.00i)

提示

只提交自己定义的函数部分,控制输出小数点后两位,用 setiosflags(ios::fixed);和setprecision(2);控制

#include <iostream> #include <iomanip> using namespace std;   class Complex { public:     Complex():real(0),imag(0) {}     Complex(double r,double i):real(r),imag(i) {}     Complex operator+(Complex &);     Complex operator+(double &);     friend Complex operator+(double&,Complex &);     friend ostream& operator << (ostream& output, const Complex& c); private:     double real;     double imag; };   Complex Complex::operator+(Complex &c) {return Complex(real+c.real,imag+c.imag);} Complex Complex::operator+(double &r) {return Complex(real+r,imag);} Complex operator+(double &r,Complex&c) {return Complex(r+c.real,c.imag);} ostream& operator<<(ostream &cout,const Complex &c) {     cout<<setiosflags(ios::fixed);         cout<<setprecision(2);cout<<'('<<c.real; if(c.imag>0) cout<<'+'; cout<<c.imag<<"i)"<<endl; }   int main() {     //测试复数加复数     double real,imag;     cin>>real>>imag;     Complex c1(real,imag);     cin>>real>>imag;     Complex c2(real,imag);     Complex c3=c1+c2;     cout<<"c1+c2=";     cout<<c3;       //测试复数加实数     double d;     cin>>real>>imag;     cin>>d;     c3=Complex(real,imag)+d;     cout<<"c1+d=";     cout<<c3;       //测试实数加复数     cin>>d;     cin>>real>>imag;     c1=Complex(real,imag);     c3=d+c1;     cout<<"d+c1=";     cout<<c3;       return 0; }

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