C++中的复数类

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

2、amp;c) const; /减运算 complex mul(const complex &c) const; /乘运算 complex div(const complex &c) const; /除运算 /以下为普通成员函数float getreal(void) const; /获取实部 float getimage(void) const; /获取虚部 void setcomplex(float r,float i); /重新设定复数值 /以下为输出输入函数重载friend ostream& operator<<(ostream& out,con

3、st complex& c); /输出重载 friend istream& operator>>(istream& in,complex& c); /输入重载 /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 complex operator-

4、(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& c,float r);

5、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 complex operator/(const

6、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& c2);friend comple

7、x operator/(const complex& c1,const complex& c2);/定义虚数单位ie const 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)real=c.real;image=c.image;/加

8、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) const complex t;t.real=real-c.real;t.image=image-c.image;return t;/乘运算 complex complex:mul(const complex &c) constcomplex t;t.real=real*c.r

9、eal-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; t.real=(real*c.real+image*c.image)/(c.real*c.real+c.image*c.image); t.image=(c.real*image-c.image*real)/(

10、c.real*c.real+c.image*c.image); return t;/获取实部 float complex:getreal(void) constreturn real;/获取虚部 float complex:getimage(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) ou

11、t<<c.real<<'+'<<c.image<<'i' if(c.image<0) out<<c.real<<c.image<<'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

12、 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 r,const complex& c)complex t;t.real=r-c.real;t.image=c.image;return t; comp

13、lex operator-(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=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

14、 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& c,float r)complex t;t.real=r-c.real;t.image=c.image;return t; complex oper

15、ator-(const complex& 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=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 operato

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

17、t.real=c.real/(float)r;t.image=c.image/(float)r;return t;complex operator+(const complex& c1,const complex& 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);com

18、plex operator/(const complex& c1,const complex& c2)return c1.div(c2);/类的测试(test.cpp)#include <iostream.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;