3.为上面的复数类complex定义友员函数，重载运

//刚自己写的，贴上来。里面的变量名字这些都是拼音...
////////////////////////////////////////////////////
/////////////头文件Fushu.h//////////////
/////////////////////////////////////////////////
#ifndef Fushu_H_
#define Fushu_H_
#include<iostream>
class Fushu
{
private :
double shi ;
double xu ;

public :
Fushu() ;
Fushu( double s , double x ) ;
double rshi () { return shi ; }
double rxu () { return xu ; }

//operator overload

Fushu operator+ ( const Fushu & t )const;
Fushu operator+ ( double n )const;
Fushu operator- ( const Fushu & t )const;
Fushu operator- ( double n )const;
Fushu operator* ( const Fushu & t )const;
Fushu operator* ( double n )const;
Fushu operator~ () //共厄
{ return Fushu( shi , -xu