#include #include #include #include using namespace std; static int id = 0; class clsEmployee { string m_name; int m_id; public : clsEmployee(string name) : m_name (name) , m_id(++id) {} virtual void display() { cout << m_id << " " << m_name; } }; class clsMgr : public clsEmployee { vector> vecEmp; public: clsMgr(string name) : clsEmployee(name) {} void display() { clsEmployee::display(); cout << " and he/she has following direct reportees : \n"; for(const auto& emp : vecEmp) { cout << "---->"; if (!emp.expired()) emp.lock()->display(); cout<& ptr); void RemoveReportee(shared_ptr& ptr); }; void clsMgr::AddReportee(shared_ptr& ptr) { weak_ptr wptr(ptr); auto itr = find_if(vecEmp.begin(),vecEmp.end(), [&wptr](const weak_ptr& p1){return wptr.lock() == p1.lock();}); if (itr == vecEmp.end()) vecEmp.push_back(ptr); } void clsMgr::RemoveReportee(shared_ptr& ptr) { weak_ptr wptr(ptr); auto itr = find_if(vecEmp.begin(),vecEmp.end(), [&wptr](const weak_ptr& p1){return wptr.lock() == p1.lock();}); if (itr != vecEmp.end()) vecEmp.erase(itr); } int main() { shared_ptr pE1 = make_shared("Ketan"); shared_ptr pE2 = make_shared("Lalcheta"); shared_ptr pE3 = make_shared("Abc"); shared_ptr pE4 = make_shared("Def"); shared_ptr pE5 = make_shared("Ghi"); pE2->AddReportee(pE1); pE2->AddReportee(pE1); pE2->AddReportee(pE4); pE1->display();cout << endl; pE2->display();cout << endl; pE3->display();cout << endl; pE4->display();cout << endl; pE5->display();cout << endl; cout << "-------Use count-------------\n"; cout << pE1.use_count() << endl; cout << pE2.use_count() << endl; cout << pE3.use_count() << endl; cout << pE4.use_count() << endl; cout << pE5.use_count() << endl; cout << "-----------------------------\n"; pE2->RemoveReportee(pE1); pE2->display();cout << endl; return 0; }

employee_Manager_WeakPointer