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_hclasscomplexprivate:floatreal;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(

2、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;/获取实部floatgetimage(void)const;获取虚部voidsetcomplex(floatr,floati);重新设定复数值输出重载输入重载输出重载输入重载以下为输出输入函数重载friendostream&operator<<(ostream&out,constcomplex&c);friendistream&operator>

3、>(istream&in,complex&c);以下为运算符重载friendcomplexoperator+(floatr,constcomplex&c);/friendcomplexoperator+(intr,constcomplex&c);friendcomplexoperator-(floatr,constcomplex&c);friendcomplexoperator-(intr,constcomplex&c);friendcomplexoperator*(floatr,constcomplex&c);friendcomp

4、lexoperator*(intr,constcomplex&c);friendcomplexoperator+(constcomplex&c,floatr);friendcomplexoperator+(constcomplex&c,intr);friendcomplexoperator-(constcomplex&c,floatr);friendcomplexoperator-(constcomplex&c,intr);friendcomplexoperator*(constcomplex&c,floatr);friendcomplexope

5、rator*(constcomplex&c,intr);friendcomplexoperator/(floatr,constcomplex&c);friendcomplexoperator/(intr,constcomplex&c);friendcomplexoperator/(constcomplex&c,floatr);friendcomplexoperator/(constcomplex&c,intr);friendcomplexoperator+(constcomplex&c1,constcomplex&c2);friendco

6、mplexoperator-(constcomplex&c1,constcomplex&c2);friendcomplexoperator*(constcomplex&c1,constcomplex&c2);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"构造函数c

7、omplex: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.image=im

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

9、age*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)const(returnreal;/获取虚部floatcomplex:getimage(void)const(returnimage;/设定复数值voidcomplex:setcomplex(floatr,floati)(real=r;image=i;/输出重载ostream&opera

10、tor<<(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

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

13、ge;returnt;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)(complext;t.real=r-c.real;t.image=c.image;returnt;complexopera

14、tor-(constcomplex&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,constcomp

15、lex&c)(complext(r,0);returnt.div(c);complexoperator/(intr,constcomplex&c)(complext(float)r,0);returnt.div(c);complexoperator/(constcomplex&c,floatr)(complext;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.imag

16、e/(float)r;returnt;complexoperator+(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

17、)(returnc1.div(c2);类的测试(test.cpp)#include<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<