zener, может это имелось в виду
| C++ |
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| #include <iostream>
#include <list>
#include <memory>
class Base
{
public:
virtual std::ostream& print(std::ostream& ost = std::cout) const
{
return ost << "Base";
}
};
class Derived1 : public Base
{
public:
std::ostream& print(std::ostream& ost = std::cout) const
{
return ost << "Derived1";
}
};
class Derived2 : public Base
{
public:
std::ostream& print(std::ostream& ost = std::cout) const
{
return ost << "Derived2";
}
};
int main()
{
std::list<std::shared_ptr<Base>> list;
list.emplace_back(new Base);
list.emplace_back(new Derived1);
list.emplace_back(new Derived2);
std::cout << list.size() << std::endl;
for(auto const& p : list)
p->print() << std::endl;
return 0;
} |
|
