1 #include <iostream>
2
3 using namespace std;
4
5 class Complex
6 {
7 private:
8 int a, b;
9 public:
10 Complex(int a, int b) :a(a), b(b)
11 {}
12 friend ostream& operator<<(ostream &out, Complex &c);
13
14 void operator+(Complex &c) //放在类里
15 {
16 this->a = this->a + c.a;
17 this->b = this->b + c.b;
18 //return *this;
19 }
20
21 };
22
23 ostream& operator<<(ostream &out, Complex &c)
24 {
25 out << "a = " << c.a << " b = " << c.b;
26 return out;
27 }
28
29 int main()
30 {
31 Complex c1(1, 2), c2(3, 4);
32
33 cout << c1 << "showmethemoney" << "aaaaa" << c1 << endl;
34 //输出c1之后,返回cout(重载函数中手工返回),接着输出两个字符串(系统本身功能),再次返回cout(系统函数所定义的返回),最后又输出c1(重载函数功能),返回cout,最后endl;
35 system("pause");
36 return 0;
37 }
