/*烟台大学计算机学院学生 
*All right reserved. 
*文件名称:OJ 练习一 （3） 
04.*作者：王洪海 
05.*完成日期：2014年6月10日 
06.*版本号：v1.0 
07.*对任务及求解方法的描述部分::OJ 练习一 （3）
08.*我的程序：*/  

#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 ********************
Complex Complex::operator+(Complex &c)
{
    Complex c1;
    c1.real=real+c.real;
    c1.imag=imag+c.imag;
    return c1;
}
Complex Complex::operator+(double &d)
{
    Complex c1;
    c1.real=d+real;
    c1.imag=imag;
    return c1;
}
 Complex operator+(double &d,Complex &c)
 {
     Complex c1;
     c1.real=d+c.real;
     c1.imag=c.imag;
     return c1;
 }
 ostream& operator << (ostream& output, const Complex& c)
 {
     output<<"("<<setiosflags(ios::fixed)<<setprecision(2)<<c.real;
     if(c.imag>0)
     output<<"+"<<setiosflags(ios::fixed)<<setprecision(2)<<c.imag;
     else
     output<<setiosflags(ios::fixed)<<setprecision(2)<<c.imag;
     output<<"i)"<<endl;
     return output;
 }
//********************* 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;
}

运行结果，如下图：