#include <iostream>
class Product{
virtual void func() = ;
virtual ~Product(){};
}; class ProductA : public Product{
void func(){
std::cout << "create ProductA..." << std::endl;
}; class ProductB : public Product{
void func(){
std::cout << "create ProductB..." << std::endl;
}; class Factory{
static Product* createProduct(enum CTYPE ctype){
if(ctype == PRODUCTA)
return new ProductA;
else if(ctype == PRODUCTB){
return new ProductB;
return nullptr;
}; int main(){
Product* p = Factory::createProduct(CTYPE::PRODUCTA);
return ;

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