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