C++简单又好用的基本运算符重载

class Person
{
public:
	Person operator+(Person p)
	{
		Person temp; 
		temp.m_a = this->m_a + p.m_a;
		temp.m_b = this->m_b + p.m_b;
		return temp;
	}
	int m_a;
	int m_b;
};
int main()
{
    Person p1, p2;
    p1.m_a = 10, p2.m_a=20;
    p1.m_b = 30, p2.m_b = 40;
    Person pa = p1.operator+(p2);
    Person pb =p1+p2;
}

Person operator+(Person p1,Person p2)
{
	Person temp;
	temp.m_a = p1.m_a + p2.m_a;
	temp.m_b = p1.m_b + p2.m_b;
	return temp;
}
Person pa = operator+(p1, p2);
Person pb = p1+p2;

Person operator+(Person p1, int v)
{
	Person temp;
	temp.m_a = p1.m_a + v;
	temp.m_b = p1.m_b + v;
	return temp;
}

int main()
{
	Person p1, p2;
	p1.m_a = 10, p2.m_a=20;
	p1.m_b = 30, p2.m_b = 40; 
	Person pa = p1 + p2;
	Person pb = operator+(p1, p2);
	Person p4 = pa + pb;
	Person p5 = p4 + 10;
	cout << "pa的属性为：" <<pa.m_a << pa.m_b << endl;
	cout << "pb的属性为：" <<pb.m_a << pb.m_b << endl;
	cout << "p4的属性为：" <<p4.m_a << p4.m_b << endl;
	cout << "p5的属性为：" << p5.m_a << p5.m_b << endl;
}