Design&Art

// ?Computer.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include? " stdafx.h "
#include? < string >
#include? < iostream >

using ? namespace ?std;

class ?Ram {} ;
class ?IBMRam:? public ?Ram {} ;
class ?HPRam:? public ?Ram {} ;
class ?Cpu {} ;
class ?IBMCpu:? public ?Cpu {} ;
class ?HPCpu:? public ?Cpu {} ;

class ?Computer
{
public :
?Computer( string ?strName,?Ram * ?pRam,?Cpu * ?pCpu)
? {
??m_strName? = ?strName;
??m_pRam? = ?pRam;
??m_pCpu? = ?pCpu;
??cout << " A? " << ?m_strName? << " ?computer?is?produced " << endl;
?}
? ~ Computer()
? {
??delete?m_pRam;
??delete?m_pCpu;
??cout << " A? " << ?m_strName? << " ?computer?is?deleted " << endl;
?}
public :
? string ?m_strName;
private :
?Ram * ?m_pRam;
?Cpu * ?m_pCpu;
} ;

class ?ComputerProducer
{
public :
?Computer * ?createComputer()
? {
?? return ? new ?Computer(setName(),?createRam(),?createCpu());
?}
? virtual ?Ram * ?createRam()? = ? 0 ;
? virtual ?Cpu * ?createCpu()? = ? 0 ;
? virtual ? string ?setName()? = ? 0 ;
} ;

class ?IBMProducer:? public ?ComputerProducer
{
public :
? virtual ?Ram * ?createRam()
? {
??cout << " A?IBMRam?is?producted " << endl;
?? return ? new ?IBMRam;
?}
? virtual ?Cpu * ?createCpu()
? {
??cout << " A?IBMCPU?is?producted " << endl;
?? return ? new ?IBMCpu;
?}
? virtual ? string ?setName()
? {
?? return ? string ( " IBM " );
?}
} ;

class ?HPProducer:? public ?ComputerProducer
{
public :
? virtual ?Ram * ?createRam()
? {
??cout << " A?HPRam?is?producted " << endl;
?? return ? new ?HPRam;
?}
? virtual ?Cpu * ?createCpu()
? {
??cout << " A?HPCPU?is?producted " << endl;
?? return ? new ?HPCpu;
?}
? virtual ? string ?setName()
? {
?? return ? string ( " HP " );
?}
} ;

int ?main( int ?argc,? char * ?argv[])
{
? // ?client?code
?ComputerProducer * ?pIBMFac = ? new ?IBMProducer;
?ComputerProducer * ?pHPFac? = ? new ?HPProducer;
?Computer * ?pIBMComputer? = ?pIBMFac -> createComputer();
?Computer * ?pHPComputer? = ?pHPFac? -> createComputer();
?delete?pIBMComputer;
?delete?pHPComputer;
?delete?pIBMFac;
?delete?pHPFac;
? return ? 0 ;
}