c++ 自写复数类练习

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本文展示了如何使用C++定义一个复数类`Complex`，包括构造函数、获取实部和虚部的方法，以及实现了加法、赋值、相等和不等操作符的重载。示例代码包括`Complex.h`、`Complex.cpp`和`main.cpp`，通过实例演示了复数类的使用和操作符功能。

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//Complex.h

#ifndef ComplexH
#define ComplexH
#include <iostream>
//---------------------------------------------------------------------------
class Complex
{public:
Complex(double r=0,double i=0)
:re(r),im(i)
{}
double real() const {return re;}
double imag() const {return im;}
int func(const Complex &para) const
{return para.re+para.im;}
Complex & operator +=(const Complex &);

Complex & operator =(const Complex &) ;
bool operator ==(const Complex &) ;
bool operator !=(const Complex &) ;
private:
double re,im;
friend Complex & _doapl(Complex *,const Complex &r);

};
ostream &
operator <<(ostream &os,const Complex &r );
#endif

//Complex.cpp

//---------------------------------------------------------------------------
#include <iostream>
#include "Complex.h"
using namespace std;
//---------------------------------------------------------------------------
inline Complex&
_doapl(Complex *ths,const Complex & r)
{
ths->re+=r.re;
ths->im+=r.im;
return *ths;
}
Complex &
Complex::operator +=(const Complex &r)
{
return _doapl(this,r);
}

Complex &
Complex::operator =(const Complex &c)
{
re=c.re;
im=c.im;
return *this;
}
ostream &
operator <<(ostream &os,const Complex &r )
{
return os<<"("<<r.real()<<","<<r.imag()<<")"<<endl;
}
bool Complex::operator ==(const Complex & c)
{
return (this->re == c.re);
}
bool Complex::operator !=(const Complex & c)
{
return !(this->re == c.re);
}
//main.cpp

#include <iostream>
#include "Complex.h"
using namespace std;
int main()

{ Complex c1(2.5,1.5); Complex c2(3.2,1.7);
cout<<c1;
cout<<c2.func(c1)<<endl;
c1+=c2;
cout<<c2;
   cout<<c1;
   Complex c4(3.2,1.7);
   bool bb;
   cout<<(bb=(c2==c4))<<endl;
   bool cc;
   cout<<(cc=(c2!=c1))<<endl;
   system("pause");
   return 0;
}