#include

#include

#include

using namespace std;

class BaseItem $\{$

public:

void SetLastName$($string providedName$)\{$

lastName $=$ providedName;

$\}$;

$//$ FIXME: Define PrintItem$()$ member function

protected:

string lastName;

$\}$;

class DerivedItem : public BaseItem $\{$

public:

void SetFirstName$($string providedName$)\{$

firstName $=$ providedName;

$\}$;

void PrintItem$()$ const override $\{$

cout $<<$ "First and last name: $"$;

cout $<<$ firstName $<<""<<$ lastName $<<$ endl;

$\}$;

private:

string firstName;

$\}$;

int main$()\{$

BaseItem$*$ baseItemPtr $=$ nullptr;

DerivedItem$*$ derivedItemPtr $=$ nullptr;

vector itemList;

unsigned int i;

baseItemPtr $=$ new BaseItem$()$;

baseItemPtr$->$SetLastName$("$Smith$")$;

derivedItemPtr $=$ new DerivedItem$()$;

derivedItemPtr$->$SetLastName$("$Jones$")$;

derivedItemPtr$->$SetFirstName$("$Bill$")$;

itemList.push$\_$back$($baseItemPtr$)$;

itemList.push$\_$back$($derivedItemPtr$)$;

for $($i $=0$; i $<$ itemList.size$()$; $++$i$)\{$

itemList.at$($i$)->$PrintItem$()$;

$\}$

return $0$;

$\}$