Pointer to array of base class, populate with derived class

Question

If I have a base class, with only virtual methods and 2 derived classes from the base class, with those virtual methods implemented.

How do I:

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Answer 1

It is C++ use std::vector instead of simple array:

std::vector base;
base.push_back(new FirstDerivedClass());
base.push_back(new SecondDerivedClass());

As Kerrek SB noticed safest method is to use std::unique_ptr:

std::vector > base;
base.push_back( std_unique_ptr(new FirstDerivedClass()) );
base.push_back( std_unique_ptr(new SecondDerivedClass()) );