运算符重载

红莲教主

1. #include <iostream>
   
2. 
   
3. //using namespace std ;
   
4. 
   
5. using std::cout;
   
6. using std::endl;
   
7. using std::ostream;
   
8. 
   
9. class Complex
   
10. {
    
11. public:
    
12.     Complex(int a , int b);
    
13.     ~Complex();
    
14.     Complex operator+(Complex com);
    
15. private:
    
16.     int a ;
    
17.     int b ;
    
18. 
    
19. friend ostream& operator<<(ostream& out ,Complex com );
    
20. friend Complex operator-(Complex c1 ,Complex c2);
    
21. };
    
22. 
    
23. ostream& operator<<(ostream& out ,Complex com );
    
24. Complex operator-(Complex c1 ,Complex c2);
    
25. 
    
26. // 构造函数
    
27. Complex::Complex(int a , int b)
    
28. {
    
29.     this->a = a ;
    
30.     this->b = b ;
    
31. }
    
32. 
    
33. //析构函数
    
34. Complex::~Complex()
    
35. {
    
36. 
    
37. }
    
38. 
    
39. //重载加号运算符
    
40. Complex Complex::operator+(Complex com)
    
41. {
    
42.     return Complex(a+com.a , b+com.b);
    
43. }
    
44. //重载减号预算福
    
45. Complex operator-(Complex c1 ,Complex c2)
    
46. {
    
47.     return Complex(c1.a-c2.a , c1.b-c2.b);
    
48. }
    
49. //重载<<运算符
    
50. ostream& operator<<(ostream& out ,Complex com )
    
51. {
    
52.     cout<<"("<<com.a<<","<<com.b<<")"<<endl;
    
53.     return out ;
    
54. }
    
55. int main()
    
56. {
    
57.     Complex A(100,200);
    
58.     Complex B(500,600);
    
59. 
    
60.     cout<<(A+B);
    
61. 
    
62.     Complex* C = new Complex(800,600);
    
63.     Complex* D = new Complex(400,200);
    
64. 
    
65.     cout<<(*C-*D);
    
66. 
    
67.     delete C ;
    
68.     delete D ;
    
69. 
    
70.     return 0;
    
71. }
    

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