//A:  操作符重载实现为类成员函数/*#include 
     
      class Person{private:	int age;public:	Person(int a){	    this->age=a;	}	//inline bool operator==(const Person &ps)const;	inline bool operator==(const Person *ps)const;};//inline bool Person::operator==(const Person &ps)const{//	std::cout<<"this->age=="<
      
       age<<",  ps.age=="<
       
        <<"\n";//	if(this->age == ps.age)//		return true;//	else//		return false;//};inline bool Person::operator==(const Person *ps)const{	std::cout<<"this->age=="<
        
         age<<",  ps->age=="<
         
          age<<"\n";	if(this->age == ps->age)		return true;	else		return false;};int main(){     //Person p1(10);	 //Person p2(10);	 Person *a = new Person(10);	 Person *b =  new Person(10);	 //if(p1 == p2)	 if(a == b)	 {	     std::cout<<"相等\n";	 }else		 std::cout<<"不相等\n";     system("pause");	 return 0;	 //由上面的测试可以得出结论，指针与指针之间是不能进行重载运算符比较的}*///B:操作符重载实现为非类成员函数(全局函数)#include 
          
           using namespace std;class Person{public: int age;};bool operator==(Person const &p1, Person const &p2){ if(p1.age == p2.age) return true; else return false;};class Test{private: int m_value;public: Test(int x=3){ m_value = x; } Test &operator++(); //前增量 Test &operator++(int);//后增量 void display() { cout<<"m_value="<
           
            <<"\n"; }};//前增量 Test& 是指返回一个Test的地址Test& Test::operator++(){ m_value++; //先增量 return *this; //返回当前对像};//后增量Test& Test::operator++(int){ Test tmp(*this); //创建临时对像 m_value++; //再增量 return tmp; //返回临时对像}int main(){ Person a; Person b; a.age=10; b.age=10; if(a == b){ cout<<"相等\n"; }else cout<<"不相等\n"; cout<<"进行另外一个测试\n"; Test t; t.display(); t++; t.display(); ++t; t.display(); system("pause"); return 0;}