Big operator+(const Big & lhs, const int & rhs)
{
std::cout << "*****在operator+里*****" << std::endl;
Big b(lhs);
b.setX(lhs.getX() + rhs);
b.setY(lhs.getY() + rhs);
std::cout << "*****operator+完成*****" << std::endl;
return b;
}//operator+(Big, int)
void print(const Big & b)
{
std::cout << "x=" << b.getX() << std::endl
<< "y=" << b.getY() << std::endl
<< "name=" << b.getName() << std::endl << std::endl;
}//print(Big)
