C++中的复数类

1、C+中的复数类/类的定义(mycomplex.h)#include<iostream.h>#ifndefmycomplex_h#definemycomplex_hclasscomplexfriendcomplexoperator-(constcomplex&c1,constcomplex&c2);friendcomplexoperator*(constcomplex&c1,constcomplex&c2);friendcomplexoperator/(constcomplex&c1,constcomplex&c2);private:f

2、loatreal;floatimage;public:complex(float=0.0,float=0.0);/构造函数complex(constcomplex&c);/拷贝构造函数/以下为运算函数complexadd(constcomplex&c)const;/加运算complexsub(constcomplex&c)const;/减运算complexmul(constcomplex&c)const;/乘运算complexdiv(constcomplex&c)const;/除运算/以下为普通成员函数floatgetreal(void)const;/获

3、取实部floatgetimage(void)const;/获取虚部voidsetcomplex(floatr,floati);/重新设定复数值/以下为输出输入函数重载friendostream&operator<<(ostream&out,constcomplex&c);/输出重载friendistream&operator>>(istream&in,complex&c);/输入重载/以下为运算符重载friendcomplexoperator+(floatr,constcomplex&c);/friendcompl

4、exoperator+(intr,constcomplex&c);friendcomplexoperator-(floatr,constcomplex&c);friendcomplexoperator-(intr,constcomplex&c);friendcomplexoperator*(floatr,constcomplex&c);friendcomplexoperator*(intr,constcomplex&c);friendcomplexoperator+(constcomplex&c,floatr);friendcomplexoper

5、ator+(constcomplex&c,intr);friendcomplexoperator-(constcomplex&c,floatr);friendcomplexoperator-(constcomplex&c,intr);friendcomplexoperator*(constcomplex&c,floatr);friendcomplexoperator*(constcomplex&c,intr);friendcomplexoperator/(floatr,constcomplex&c);friendcomplexoperator/(

6、intr,constcomplex&c);friendcomplexoperator/(constcomplex&c,floatr);friendcomplexoperator/(constcomplex&c,intr);friendcomplexoperator+(constcomplex&c1,constcomplex&c2);/定义虚数单位ieconstcomplexie(0,1);#endif/类的实现(mycomplex.cpp)#include<iostream.h>#include"mycomplex.h"/

7、构造函数complex:complex(floatr,floati)real=r;image=i;/拷贝构造函数complex:complex(constcomplex&c)real=c.real;image=c.image;/加运算complexcomplex:add(constcomplex&c)constcomplext;t.real=real+c.real;t.image=image+c.image;returnt;/减运算complexcomplex:sub(constcomplex&c)constcomplext;t.real=real-c.real;t.i

8、mage=image-c.image;returnt;/乘运算complexcomplex:mul(constcomplex&c)constcomplext;t.real=real*c.real-image*c.image;t.image=image*c.real+real*c.image;returnt;/除运算complexcomplex:div(constcomplex&c)constif(!(c.real|c.image)cout<<"分母不能为零"<<endl;exit;complext;t.real=(real*c.rea

9、l+image*c.image)/(c.real*c.real+c.image*c.image);t.image=(c.real*image-c.image*real)/(c.real*c.real+c.image*c.image);returnt;/获取实部floatcomplex:getreal(void)constreturnreal;/获取虚部floatcomplex:getimage(void)constreturnimage;/设定复数值voidcomplex:setcomplex(floatr,floati)real=r;image=i;/输出重载ostream&oper

10、ator<<(ostream&out,constcomplex&c)if(c.image>0)out<<c.real<<'+'<<c.image<<'i'if(c.image<0)out<<c.real<<c.image<<'i'if(c.image=0)out<<c.real;returnout;/输入重载istream&operator>>(istream&in,complex&a

11、mp;c)in>>c.real>>c.image;returnin;/以下为运算符重载complexoperator+(floatr,constcomplex&c)complext;t.real=r+c.real;t.image=c.image;returnt;complexoperator+(intr,constcomplex&c)complext;t.real=r+c.real;t.image=c.image;returnt;complexoperator-(floatr,constcomplex&c)complext;t.real=r-c.

12、real;t.image=c.image;returnt;complexoperator-(intr,constcomplex&c)complext;t.real=r-c.real;t.image=c.image;returnt;complexoperator*(floatr,constcomplex&c)complext;t.real=r*c.real;t.image=r*c.image;returnt;complexoperator*(intr,constcomplex&c)complext;t.real=r*c.real;t.image=r*c.image;ret

13、urnt;complexoperator+(constcomplex&c,floatr)complext;t.real=r+c.real;t.image=c.image;returnt;complexoperator+(constcomplex&c,intr)complext;t.real=r+c.real;t.image=c.image;returnt;complexoperator-(constcomplex&c,floatr)t.real=r-c.real;t.image=c.image;returnt;complexoperator-(constcomplex&

14、amp;c,intr)complext;t.real=r-c.real;t.image=c.image;returnt;complexoperator*(constcomplex&c,floatr)complext;t.real=r*c.real;t.image=r*c.image;returnt;complexoperator*(constcomplex&c,intr)complext;t.real=r*c.real;t.image=r*c.image;returnt;complexoperator/(floatr,constcomplex&c)complext(r,

15、0);returnt.div(c);complexoperator/(intr,constcomplex&c)complext(float)r,0);returnt.div(c);complexoperator/(constcomplex&c,floatr)t.real=c.real/r;t.image=c.image/r;returnt;complexoperator/(constcomplex&c,intr)complext;t.real=c.real/(float)r;t.image=c.image/(float)r;returnt;complexoperator

16、+(constcomplex&c1,constcomplex&c2)returnc1.add(c2);complexoperator-(constcomplex&c1,constcomplex&c2)returnc1.sub(c2);complexoperator*(constcomplex&c1,constcomplex&c2)returnc1.mul(c2);complexoperator/(constcomplex&c1,constcomplex&c2)returnc1.div(c2);/类的测试(test.cpp)#inc

17、lude<iostream.h>#include"mycomplex.h"intmain()/测试函数运算complexc1,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complexc;c=1+2*ie+3;cout<<c<