C++中的复数类

1、C+冲的复数类/ 类的定义( mycomplex.h )#include <iostream.h> #ifndef mycomplex_h #define mycomplex_h class complexprivate:float real;float image;public:complex(float=0.0,float=0.0); / complex(const complex &c); / 以下为运算函数complex add(const complex &c) const; / complex sub(const complex &c) cons

2、t; / complex mul(const complex &c) const; / complex div(const complex &c) const; / / 以下为普通成员函数 float getreal(void) const; / float getimage(void) const; / void setcomplex(float r,float i); / / 以下为输出输入函数重载构造函数 拷贝构造函数加运算 减运算 乘运算 除运算获取实部获取虚部 重新设定复数值输出输入friend ostream& operator<<(ostrea

3、m& out,const complex& c); / 重载friend istream& operator>>(istream& in,complex& c);/重载/ 以下为运算符重载friend complex operator+(float r,const complex& c); / friend complex operator+(int r,const complex& c); friend complex operator-(float r,const complex& c); friend compl

4、ex operator-(int r,const complex& c); friend complex operator*(float r,const complex& c); friend complex operator*(int r,const complex& c); friend complex operator+(const complex& c,float r); friend complex operator+(const complex& c,int r); friend complex operator-(const complex

5、& c,float r); friend complex operator-(const complex& c,int r); friend complex operator*(const complex& c,float r); friend complex operator*(const complex& c,int r); friend complex operator/(float r,const complex& c); friend complex operator/(int r,const complex& c); friend c

6、omplex operator/(const complex& c,float r);friend complex operator/(const complex& c,int r);friend complex operator+(const complex& c1,const complex& c2);friend complex operator-(const complex& c1,const complex& c2);friend complex operator*(const complex& c1,const complex

7、& c2);friend complex operator/(const complex& c1,const complex& c2);/ 定义虚数单位 ieconst complex ie(0,1);#endif/ 类的实现 (mycomplex.cpp)#include <iostream.h>#include "mycomplex.h"/ 构造函数complex:complex(float r,float i)real=r;image=i;/ 拷贝构造函数complex:complex(const complex &c)re

8、al=c.real;image=c.image;/ 加运算complex complex:add(const complex &c) constcomplex t;t.real=real+c.real;t.image=image+c.image;return t;/ 减运算complex complex:sub(const complex &c) constcomplex t;t.real=real-c.real;t.image=image-c.image; return t;/ 乘运算complex complex:mul(const complex &c) cons

9、tcomplex t; t.real=real*c.real-image*c.image; t.image=image*c.real+real*c.image; return t;/ 除运算complex complex:div(const complex &c) constif(!(c.real|c.image)cout<<" 分母不能为零 "<<endl;exit;complex t;/ 获取实部float complex:getreal(void) constreturn real;/ 获取虚部float complex:getimag

10、e(void) constreturn image;/ 设定复数值void complex:setcomplex(float r,float i)real=r;image=i;/ 输出重载ostream& operator<<(ostream& out,const complex& c) if(c.image>0) out<<c.real<<'+'<<c.image<<'i'if(c.image<0) out<<c.real<<c.image&

11、lt;<'i'if(c.image=0) out<<c.real;return out;/ 输入重载istream& operator>>(istream& in,complex& c) in>>c.real>>c.image; return in;/ 以下为运算符重载complex operator+(float r,const complex& c) complex t; t.real=r+c.real; t.image=c.image; return t;complex operator

12、+(int r,const complex& c) complex t;t.real=r+c.real;t.image=c.image;return t;complex operator-(float r,const complex& c) complex t;t.real=r-c.real; t.image=c.image;return t;complex operator-(int r,const complex& c)complex t;t.real=r-c.real;t.image=c.image;return t;complex operator*(float

13、 r,const complex& c)complex t;t.real=r*c.real;t.image=r*c.image;return t;complex operator*(int r,const complex& c)complex t;t.real=r*c.real;t.image=r*c.image; return t;complex operator+(const complex& c,float r) complex t;t.real=r+c.real;t.image=c.image;return t;complex operator+(const c

14、omplex& c,int r)complex t;t.real=r+c.real;t.image=c.image;return t;complex operator-(const complex& c,float r) complex t; t.real=r-c.real; t.image=c.image; return t;complex operator-(const complex& c,int r)complex t;t.real=r-c.real;t.image=c.image;return t;complex operator*(const complex

15、& c,float r)complex t;t.real=r*c.real;t.image=r*c.image;return t;complex operator*(const complex& c,int r)complex t;t.real=r*c.real;t.image=r*c.image;return t;complex operator/(float r,const complex& c)complex t(r,0);return t.div(c);complex operator/(int r,const complex& c)complex t(

16、float)r,0);return t.div(c);complex operator/(const complex& c,float r)complex t;t.real=c.real/r;t.image=c.image/r; return t;complex operator/(const complex& c,int r)complex t;t.real=c.real/(float)r;t.image=c.image/(float)r; return t;complex operator+(const complex& c1,const complex&

17、c2) return c1.add(c2);complex operator-(const complex& c1,const complex& c2) return c1.sub(c2);complex operator*(const complex& c1,const complex& c2) return c1.mul(c2);complex operator/(const complex& c1,const complex& c2) return c1.div(c2);/ 类的测试 (test.cpp)#include <iostr

18、eam.h>#include "mycomplex.h"int main()/ 测试函数运算 complex c1,c2;c1.setcomplex(1,2);c2.setcomplex(2,3); cout<<"c1+c2="<<c1.add(c2)<<endl; cout<<"c1-c2="<<c1.sub(c2)<<endl; cout<<"c1*c2="<<c1.mul(c2)<<endl; cout<<"c1/c2="<<c1.div(c2)<<endl;/ 测试运算符重载 complex c; c=1+2*ie+3; cout<<c<<endl; c=1+2*ie/3;