Question

Write the printitem() method for the base class. sample output for below program: last name: smith first and last name: bill jones

Answer 1

To print the last name as smith,  first and last name as bill jones, use the polymorphism property of OOPs. For this, define a base class and derive the child class from the base class that have the same property as base class have. Set the last name as given name and in the child class assign this value to first name. By using pointer one can call the values. Here I have used stack to store and retrieve the values. The complete code is given below in the further explanation section.

Further explanation:

Code:

The C++ code to print the last name as smith, first and last name as bill jones is as below:

#include <iostream>

#include <vector>

#include <string>

using namespace std;

//Define class  

class BaseClass {

public:

void SetLastName(string givenName) {

lastName =givenName;

}

// Define the print function to print the first name and last name

protected:

string lastName;

};

class DerivedClass : public BaseClass {

public:

void SetFirstName(string givenName) {

firstName = givenName;

}

void PrintItem() {

cout << " first and last name : ";

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

};

private:

string firstName;

};

int main() {

BaseClass* BaseClassPtr = 0;

DerivedClass* DerivedClassPtr = 0;

vector<BaseClass*> itemList;

int i = 0;

BaseClassPtr = new BaseClass();

BaseClassPtr->SetLastName("Smith");

DerivedClassPtr = new DerivedClass();

DerivedClassPtr->SetLastName("Jones");

DerivedClassPtr->SetFirstName("Bill");

itemList.push_back(BaseClassPtr);

itemList.push_back(DerivedClassPtr);

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

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

}

return 0;

}

Output:

last name: smith

first and last name: bill jones

Learn more:

1. A company that allows you to license software monthly to use online is an example of ? brainly.com/question/10410011  

2. How does coding work on computers?  brainly.com/question/2257971 

Answer details:

Grade: College Engineering

Subject: Computer Science

Chapter: C++  Programming

Keyword:

C++, input, output, programming, statements,  loops, if, else, statements, firstname, lastname, base class, derive class, vector, print

Answer 2

The question involves basic polymorphism. The following is the partial flow of the program.

baseItemPtr = new BaseItem();
baseItemPtr.setLastName("Smith");

derivedItemPtr = new DerivedItem();
derivedItemPtr.setLastName("Jones");
derivedItemPtr.setFirstName("Bill");

itemList.add(baseItemPtr);
itemList.add(derivedItemPtr);

for (i = 0; i < itemList.size(); ++i) {
itemList.get(i).printItem();
}

return;