C++教程:C++操作符的重载

   private:
   double real;
   double img;
};
//未定义的函数与程序16.3.1相同
void Complex::operator =(Complex a)
{
   real=a.real;
   img=a.img;
}
Complex Complex::operator +(Complex a)
{
   Complex temp(a.real+real,a.img+img);
   return temp;
}
Complex Complex::operator -(Complex a)
{
   Complex temp(real-a.real,img-a.img);
   return temp;
}