#include <string>

 #include <iostream>

 using namespace std;

 class STSystemA

 {

 public:

         void OperationA()

         {

                 cout<< "System A Operation....."<< endl;

         }

 };

 class STSystemB

 {

 public:

         void OperationB()

         {

                 cout<< "System B Operation....."<< endl;

         }

 };

 class STSystemC

 {

 public:

         void OperationC()

         {

                 cout<< "System C Operation....."<< endl;

         }

 };

 class STFacade

 {

 public:

         STFacade()

         {

                 m_stSystemA = new STSystemA();

                 m_stSystemB = new STSystemB();

                 m_stSystemC = new STSystemC();

         }

         virtual ~STFacade()

         {

                 delete m_stSystemA;

                 delete m_stSystemB;

                 delete m_stSystemC;

         }

         void Operation()

         {

                 m_stSystemA->OperationA();

                 m_stSystemB->OperationB();

                 m_stSystemC->OperationC();

         }

         STSystemA* m_stSystemA;

         STSystemB* m_stSystemB;

         STSystemC* m_stSystemC;

 };

 int main(int argc, char* argv[])

 {

         STFacade* stFacade = new STFacade();

         stFacade->Operation();

         delete stFacade;

         return ;

 }

 /////////////////////////////////////

 [root@ ~/learn_code/design_pattern/11_facade]$ ./facade

 System A Operation.....

 System B Operation.....

 System C Operation.....