Question

C++

Write the PrintItem() function for the base class. Sample output for below program:
Last name: Smith
First and last name: Bill Jones
#include
#include
#include
using namespace std;
class BaseItem {
public:
void SetLastName(string providedName) {
lastName = providedName;
};
// FIXME: Define PrintItem() member function
/* Your solution goes here */
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;
}

Answer 1

#include <iostream>

#include <vector>

#include <string>

using namespace std;

class BaseItem {

public:

void SetLastName(string providedName) {

lastName = providedName;

};

void PrintItem() const {

cout << "Last name: " << lastName << endl;

};

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<BaseItem*> 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;

}