#include #include #include #include using namespace std; static int _intCnt = 1; class IEmployee { public: IEmployee(string strName) : m_intId(_intCnt), m_strName(strName) { ++_intCnt; } virtual ~IEmployee() = default; string GetName() { return m_strName; } int GetId() { return m_intId; } virtual void PrintDetails() = 0; virtual void AddReportee(shared_ptr spComp) {} virtual void RemoveReportee(shared_ptr spComp) {} private: int m_intId; string m_strName; }; class Indviduals : public IEmployee { public: Indviduals(string strName) : IEmployee(strName) {} void PrintDetails(){ cout << "Employee Id : " << GetId() << " and Name : " << GetName() << endl; } }; class Managers : public IEmployee { public: Managers(string strName) : IEmployee(strName) {} void AddReportee(shared_ptr spComp) { m_lstReportees.push_back(spComp); } void RemoveReportee(shared_ptr spComp) { m_lstReportees.erase(find(m_lstReportees.begin(), m_lstReportees.end(), spComp)); } void PrintDetails() { cout << "Employee Id : " << GetId() << " and Name : " << GetName() << " having " << m_lstReportees.size() << " sub-ordinates\n"; for (auto& spReportee : m_lstReportees) spReportee->PrintDetails(); cout << "--------\n"; } private: list> m_lstReportees; }; int main() { shared_ptr spCEO = make_shared("CEO"); shared_ptr spITHead = make_shared("IT Head"); shared_ptr spHRHead = make_shared("HR Head"); shared_ptr spAdminHead = make_shared("Admin Head"); spCEO->AddReportee(spITHead); spCEO->AddReportee(spHRHead); spCEO->AddReportee(spAdminHead); shared_ptr spIT1 = make_shared("IT Employee 1"); shared_ptr spIT2 = make_shared("IT Employee 2"); shared_ptr spIT3 = make_shared("IT Employee 3"); spITHead->AddReportee(spIT1); spITHead->AddReportee(spIT2); spITHead->AddReportee(spIT3); shared_ptr spHR1 = make_shared("HR Employee 1"); shared_ptr spHR2 = make_shared("HR Employee 2"); spHRHead->AddReportee(spHR1); spHRHead->AddReportee(spHR2); shared_ptr spAdmin1 = make_shared("Admin Employee 1"); shared_ptr spAdmin2 = make_shared("Admin Employee 1"); shared_ptr spAdmin3 = make_shared("Admin Employee 1"); shared_ptr spAdmin4 = make_shared("Admin Employee 1"); spAdminHead->AddReportee(spAdmin1); spAdminHead->AddReportee(spAdmin2); spAdminHead->AddReportee(spAdmin3); spAdminHead->AddReportee(spAdmin4); spCEO->PrintDetails(); cout << endl << endl; spAdmin4->PrintDetails(); cout << endl << endl; spHRHead->PrintDetails(); cout << endl << endl; cout << "Let's now try importance of shared_ptr\n"; cout << "use count of SPIT1: " << spIT1.use_count() << endl; cout << "Removing reportee \n"; spITHead->RemoveReportee(spIT1); cout << "use count of SPIT1: " << spIT1.use_count() << endl; cout << endl << endl ; cout << "Now below is wrong but just to show that deleting employee still holds data in manager\n"; cout << "use count of SPIT2: " << spIT2.use_count() << endl; cout << "Deleting employee \n"; spIT2.reset(); cout << "use count of SPIT2: " << spIT2.use_count() << endl; return 0; }

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