[YTu]_2439(C++习题 复数类--重载运算符+)

#include <iostream>
#include <iomanip>
using namespace std;
class Complex
{
public:
	Complex();
	Complex(double r,double i);
	double get_real();
	double get_imag();
	void display();
private:
	double real;
	double imag;
};
Complex::Complex(){}
Complex::Complex(double r,double i)
{
	real=r;
	imag=i;
}
double Complex::get_real()
{
	return real;
}
double Complex::get_imag()
{
	return imag;
}
Complex operator + (Complex &c1,Complex &c2)
{return Complex(c1.get_real()+c2.get_real(),c1.get_imag()+c2.get_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);
	Complex c3=c1+c2;
	cout<<setiosflags(ios::fixed);
	cout<<setprecision(2);
	c3.display();
	return 0;
}