关系运算符重载

#include <iostream>

class Person
{
public:
   Person(std::string name, int age):
      m_age(age),
      m_name(name)
   {
   }

   bool operator==(Person &person)
   {
      std::cout << "operator==" << std::endl;

      if(m_name == person.name_get() &&
      m_age == person.age_get()) 
      {
         return true;
      }

      return false;
   }

   bool operator!=(Person &person)
   {
      std::cout << "operator!=" << std::endl;

      if(m_name != person.name_get() ||
      m_age != person.age_get()) 
      {
         return true;
      }

      return false;
   }

   void age_set(int age)
   {
      m_age = age;
   }

   void name_set(std::string name)
   {
      m_name = name;
   }

   int age_get()
   {
      return m_age;
   }

   std::string& name_get()
   {
      return m_name;
   }

private:
   int m_age;
   std::string m_name;
};

int main()
{
   using namespace std;

   Person p1("furong", 10);
   Person p2("quange", 10);

   if(p1 == p2)
   {
      cout << "p1 == p2" << endl;
   }
   else
   {
      cout << "p1 != p2" << endl;
   }

   if(p1 != p2)
   {
      cout << "p1 != p2" << endl;
   }
   else
   {
      cout << "p1 == p2" << endl;
   }

   return 0;
}

$ ./a.out       
operator==
p1 != p2
operator!=
p1 != p2