输出运算符重载

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
/*
* 程序的版权和版本声明部分:
* Copyright (c) 2013, 烟台大学计算机学院
* All rights reserved.
* 文件名称：test.cpp
* 作
者：任子仪
* 完成日期：2014年 4月 22日
* 版 本 号：v12.1
* 输入描述：无
* 问题描述：。
* 程序输出：
* 问题分析：略
* 算法设计：略
*/
#include<iostream>
using namespace std;
class Complex
{
public:
Complex()
{
real=0;
imag=0;
}
Complex(double r,double i)
{
real=r;
imag=i;
}
//二目运算符重载
Complex operator+(Complex &c2);
Complex operator-(Complex &c2);
Complex operator*(Complex &c2);
Complex operator/(Complex &c2);
//一目运算符重载
Complex operator-();
friend ostream& operator << (ostream&,Complex&);
private:
double real;
double imag;
};
ostream& operator << (ostream& output,Complex& c)
{
if(c.imag>0)
output<<c.real<<"+"<<c.imag<<"i"<<endl;
else
output<<c.real<<c.imag<<"i"<<endl;
return output;
}
//下面定义成员函数
Complex Complex::operator+(Complex &c2)
{
return Complex(real+c2.real,imag+c2.imag);
}
Complex Complex::operator-(Complex &c2)
{
return Complex(real-c2.real,imag-c2.imag);
}
Complex Complex::operator*(Complex &c2)
{
Complex c;
c.real=real*c2.real-imag*c2.imag;
c.imag=real*c2.imag+imag*c2.real;
return c;
}
Complex Complex::operator/(Complex &c2)
{
Complex c;
double d=c2.real*c2.real+c2.imag*c2.imag;
c.real=(real*c2.real+imag*c2.imag)/d;
c.imag=(imag*c2.real-real*c2.imag)/d;
return c;
}
Complex Complex::operator-()
{
Complex c;
c.imag=0-imag;
c.real=0-real;
return c;
}
//下面定义用于测试的main()函数
int main()
{
Complex c1(3,4),c2(5,-10),c3;
cout<<"c1="<<c1;
cout<<"c2="<<c2;
c3=c1+c2;
cout<<"c1+c2="<<c3;
c3=c1-c2;
cout<<"c1-c2="<<c3;
c3=c1*c2;
cout<<"c1*c2="<<c3;
c3=c1/c2;
cout<<"c1/c2="<<c3;
c3=-c1;
cout<<"-c1="<<c3;
return 0;
}