运算符重载（作为普通函数）

运算符重载---基本概念

C++程序设计

郭炜 刘家瑛

#include<iostream>
using namespace std;
class Complex{
public:

double real;

double imaginary;

Complex(double a=0.0,double b=0.0) : real(a),imaginary(b) {}//初始化 

~Complex(){}

void print();
};
Complex operator+(Complex& a,Complex& b)//运算符重载函数(作为普通函数) 

{

return Complex(a.real+b.real,a.imaginary+b.imaginary);

}
void Complex::print()
{

cout<<real<<"+"<<imaginary<<"i"<<endl;
}
int main()
{

Complex a(3,2),b(5,4),c;

c=a+b;

c.print();

return 0;
}

注：重载为普通函数时，参数个数为运算符数目