1 #include <iostream>
2 #include <string>
3 using namespace std;
4
5 //1.成员函数重载 +号
6 class Person
7 {
8 public:
9
10 //Person operator+(Person& p)
11 //{
12 // Person temp;
13 // temp.m_A = this->m_A + p.m_A;
14 // temp.m_B = this->m_B + p.m_B;
15 // return temp;
16 //}
17 int m_A;
18 int m_B;
19 };
20
21 //2.全局函数重载 +号
22 Person operator+(Person& p1, Person& p2)
23 {
24 Person temp;
25 temp.m_A = p1.m_A + p2.m_A;
26 temp.m_B = p1.m_B + p2.m_B;
27
28 return temp;
29 }
30 //函数重载
31 Person operator+(Person& p1, int num)
32 {
33 Person temp;
34 temp.m_A = p1.m_A + num;
35 temp.m_B = p1.m_B + num;
36
37 return temp;
38
39 }
40
41 void test01()
42 {
43 Person p1;
44
45 p1.m_A = 10;
46 p1.m_B = 20;
47
48 Person p2;
49
50 p2.m_A = 10;
51 p2.m_B = 20;
52 //成员函数重载本质调用
53 //Person p3 = p1.operator+(p2);
54 //成员简化
55 //Person p3 = p1 + p2;
56
57 //全局函数.
58
59 Person p3 = operator+(p1, p2);
60 //全局函数简化
61 //Person p3 = p1 + p2;
62
63 //运算符重载也可以发生函数重载
64 Person p4 = p1 + 100; //Person +int
65
66 cout << "p3 .m_A = " << p3.m_A << endl;
67
68 cout << "p3 .m_B = " << p3.m_B << endl;
69
70
71 cout << "p4 .m_A = " << p4.m_A << endl;
72 cout << "p4 .m_B = " << p4.m_B << endl;
73
74 }
75
76
77 int main()
78 {
79 test01();
80 }
