class person
{
public:
person(){}
person(int a,int b):m_a(a),m_b(b){
}
person operator+(person &t){
person temp;
temp.m_a = this->m_a + t.m_a;
temp.m_b = this->m_b + t.m_b;
return temp;
}
public:
int m_a;
int m_b;
};
为什么没写person(){}是错的?