[YTU]_2354 (H 实现复数类中的加运算符重载【C++运算符重载】)

#include <iostream>
using namespace std;
class Complex
{
public:
    Complex();//此函数必须定义
	Complex(double r,double i);
	 friend Complex operator+(Complex &c1,Complex &c2);
	 void display();
private:
	double real,imag;
};
Complex::Complex()
{}
Complex::Complex(double r,double i)
{
	real=r;
	imag=i;
}
Complex operator+(Complex &c1,Complex &c2)
{return Complex(c1.real+c2.real,c1.imag+c2.imag);}
void Complex::display()
{cout<<'('<<real<<','<<imag<<"i)"<<endl;}
int main()
{
	double cr1,ci1,cr2,ci2;
	cin>>cr1>>ci1>>cr2>>ci2;
	Complex c1(cr1,ci1),c2(cr2,ci2),c3;
	c3=c1+c2;
	c3.display();
	return 0;
}