[YTU]_2535( C++复数运算符重载(+与<<))

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;
}

posted @ 2017-06-07 17:02  衣带渐宽、为伊憔悴  阅读(169)  评论(0编辑  收藏  举报