C++运行符重载、友元函数

Complex.h

``` 1 #pragma once
2 #include <iostream>
3
4 using namespace std;
5 //表示一个复数
6 class Complex
7 {
8 private:
9     double x, y;
10 public:
11     Complex();    //默认构造函数
12     Complex(double x, double y); //构造函数重载
13     Complex operator+(Complex & cmx) const; //‘+‘号运算符重载
14     Complex operator-(Complex & cmx) const;    //‘-‘号运算符重载
15     Complex operator*(Complex & cmx) const;    //‘*‘号运算符重载
16     Complex operator/(Complex & cmx) const;    //‘/‘号运算符重载
17     Complex operator~() const;    //‘~‘号运算符重载
18     Complex operator*(double & n) const; //‘*‘号运算符重载
19     friend Complex operator*(double & n, Complex & cmx); //友元函数,可用于表示[4.0*Complex类型]
20     friend ostream & operator<<(ostream & os, Complex & cmx); //友元函数,可用于表示[cout << Complex类型]
21 ~Complex();
22 };```

Complex.cpp

``` 1 #include "Complex.h"
2
3
4
5 Complex::Complex()
6 {
7 }
8
9 Complex::Complex(double x, double y)
10 {
11     this->x = x;
12     this->y = y;
13 }
14
15 Complex Complex::operator+(Complex & cmx) const
16 {
17     return Complex(x + cmx.x, y + cmx.y);
18 }
19
20 Complex Complex::operator-(Complex & cmx) const
21 {
22     return Complex(x - cmx.x, y - cmx.y);
23 }
24
25 Complex Complex::operator*(Complex & cmx) const
26 {
27     return Complex(x*cmx.x, y*cmx.y);
28 }
29
30 Complex Complex::operator/(Complex & cmx) const
31 {
32     return Complex(x / cmx.x, y / cmx.y);
33 }
34
35 Complex Complex::operator~() const
36 {
37     return Complex(x, -y);
38 }
39
40 Complex Complex::operator*(double & n) const
41 {
42     return Complex(x*n, y*n);
43 }
44
45 Complex operator*(double & n, Complex & cmx)
46 {
47     return cmx*n;
48 }
49
50 ostream & operator<<(ostream & os, Complex & cmx)
51 {
52     os << cmx.x << "," << cmx.y << endl;
53     return os;
54 }
55
56 Complex::~Complex()
57 {
58 }```

C++运行符重载、友元函数

(0)
(0)

0条