其實就是定義一個類，類裡面包含2個元素，一個實數，一個虛數

然後運算子過載 相加的時候 實數與實數相加，虛數與虛數相加

#include<iostream.h>

#include<string.h>

class Complex

{

public:

Complex();

Complex(double a,double b);

friend Complex operator +(Complex a,Complex b);

friend Complex operator -(Complex a,Complex b);

void show();

private:

double realp; //實部

double imagp; //虛部

};

Complex::Complex() //不帶引數的建構函式

{

realp=0.00;

imagp=0.00;

}

Complex::Complex(double a,double b) //帶引數的建構函式

{

realp=a;

imagp=b;

}

Complex operator +(Complex a,Complex b) //加法運算子過載實現

{

Complex temp;

temp.realp=a.realp+b.realp;

temp.imagp=a.imagp+b.imagp;

return temp;

}

Complex operator -(Complex a,Complex b) //減法運算子過載實現

{

Complex temp;

temp.realp=a.realp-b.realp;

temp.imagp=a.imagp-b.imagp;

return temp;

}