10-左移运算符重载

#include<bits/stdc++.h>
using namespace std;
class Person{
  public:
    //利用成员函数重载左移运算符 p.operator<<(cout) 
    //简化版本p<<cout
    //不会利用成员函数重载<<运算符，因为无法实现cout在左侧
    //void operator<<(cout)
    //{
    //
    //} 
    int m_A;
    int m_B;
};
//利用全局函数重载左移运算符
ostream & operator<<(ostream &cout,Person p){
  cout<<"m_A= "<<p.m_A<<"m_B= "<<p.m_B<<endl;
  return cout;
} 
void test01()
{
  Person p;
  p.m_A=10;
  p.m_B=10;
  cout<<p<<endl;
}
int main()
{
  //左移运算符重载  
  test01();
  return 0;
}