01.#include <iostream>
02.
03.using namespace std;
04.class Complex
05.{
06.public:
07. Complex(){real=0;imag=0;}
08. Complex(double r,double i){real=r;imag=i;}
09. friend Complex operator+(Complex &c1,Complex &c2);
10. friend Complex operator-(Complex &c1,Complex &c2);
11. friend Complex operator*(Complex &c1,Complex &c2);
12. friend Complex operator/(Complex &c1,Complex &c2);
13. void display();
14.private:
15. double real;
16. double imag;
17.};
18.//下面定义成员函数
19.Complex operator+(Complex &c1,Complex &c2)
20.{
21. return Complex (c1.real + c2.real,c1.imag + c2.imag);
22.}
23.Complex operator-(Complex &c1,Complex &c2)
24.{
25. return Complex (c1.real - c2.real,c1.imag - c2.imag);
26.}
27.Complex operator*(Complex &c1,Complex &c2)
28.{
29. Complex c;
30.
31. c.real = c1.real * c2.real - c1.imag * c2.imag;
32. c.imag = c1.real * c2.imag + c1.imag * c2.real;
33.
34. return c;
35.}
36.Complex operator/(Complex &c1,Complex &c2)
37.{
38. Complex c;
39.
40. c.real = (c1.real * c2.real + c1.imag * c2.imag)/(c2.imag * c2.imag + c2.real * c2.real);
41. c.imag = (c1.imag * c2.real - c1.real * c2.imag)/(c2.imag * c2.imag + c2.real * c2.real);
42.
43. return c;
44.}
45.
46.void Complex::display()
47.{
48. cout << "(" << real << "," << imag << "i)" << endl;
49.}
50.int main()
51.{
52. Complex c1(3,4),c2(5,-10),c3;
53. cout<<"c1 = ";
54. c1.display();
55. cout<<"c2 = ";
56. c2.display();
57. c3=c1+c2;
58. cout<<"c1+c2 = ";
59. c3.display();
60. c3=c1-c2;
61. cout<<"c1-c2 = ";
62. c3.display();
63. c3=c1*c2;
64. cout<<"c1*c2 = ";
65. c3.display();
66. c3=c1/c2;
67. cout<<"c1/c2 = ";
68. c3.display();
69. system("pause");
70. return 0;
71.}