c++重载操作符的使用及实现编译多态

#include<iostream>

using namespace std;

class CComplex{

private:
double m_fReal, m_fImag;

public:
CComplex(double r = 0, double i = 0) :m_fReal(r), m_fImag(i){

}

double GetReal(){
return m_fReal;
}

double FetImag(){
return m_fImag;
}

CComplex operator + (CComplex&);
CComplex operator + (double);

};

CComplex CComplex::operator+(CComplex& c){
this->m_fReal += c.GetReal();
this->m_fImag += c.FetImag();

return *this;

}

CComplex CComplex::operator+(double d){
this->m_fReal = this->m_fReal + d;
return *this;

}

int main()

{
CComplex c1(2.3, 3.5), c2(3.6, 6.8) , c3;

cout << "使用重载的operator+运算符实现复数与复数的相加" << endl;
cout << "c1 = " << c1.GetReal() << "+j" << c1.FetImag() << endl;
cout << "c2 = " << c2.GetReal() << "+j" << c2.FetImag() << endl;

c3 = c1 + c2;

cout << "c3  = " << c3.GetReal() << "+j" << c3.FetImag() << endl;
cout << "使用重载的+运算符实现复数和实数的相加" << endl;

c3 = c3 + 6.5;
cout << "c3  =  " << c3.GetReal() << "+j" << c3.FetImag() << endl;

getchar();
getchar();

return 0;
}

重载运算符时，需要注意下面几个问题：

1.只能重载c++语言中已有的运算符，不能臆造新的运算符

2.重载运算符后，不改变原运算符的优先级和结核性，且不能改变操作数个数

3.经重载的运算符，其操作的数据中至少有一个应该是自定义类型

4.不是所有的c++运算符都能重载，不能重载的运算符有下面6个：成员访问运算符“.” 、成员指针运算符“*” 和“->”，作用域运算符“：：” sizeof运算符和三木运算符”？：“