Declare and implement the Employee class as a derived class of the Person class
ID: 661977 • Letter: D
Question
Declare and implement the Employee class as a derived class of the Person class with the code down below:
#include "person.h"
Person::~Person()
{
if ( emails != NULL ){
delete [] emails;
emails = NULL;
}
}
Person::Person()
{
id = -1;
name ="NA";
//birthday = DayOfYear( 1,1, 2000);
emails = NULL;
numEmails = 0;
}
Person::Person(int new_id, string new_name, DayOfYear date)
{
id = new_id;
name = new_name;
//birthday = date;
emails=NULL;
numEmails=0;
}
/**/
Person::Person(const Person & someone)
{
id = someone.id;
name = someone.name;
birthday = someone.birthday;
numEmails = someone.numEmails;
//allocate space to *emails if numEmails>0
if (numEmails == 0)
emails = NULL;
else{
emails = new string [numEmails];
for (int i=0;i<numEmails; i++)
emails[ i ] = someone.emails[ i ];
}
}
/**/
/**/
void Person::operator =(const Person & rhs)
{
id = rhs.id;
name = rhs.name;
birthday = rhs.birthday;
//allocate space to *emails if needed
if (numEmails > 0)
delete [] emails; //release the old memory
numEmails = rhs.numEmails;
emails = new string [numEmails];
for (int i=0;i<numEmails; i++)
emails[ i ] = rhs.emails[ i ];
}
/**/
void Person::output() const
{
// id = 200;
cout << "-------------------------- ";
cout << " id=" << (*this).id << " name=" << this->name << " birthday=";
birthday.output();
for (int i=0; i<numEmails; i++)
cout << "email-#" << i << ": " << emails[i] ;
cout << " -------------------------- ";
}
int Person::get_id() const
{
return id;
}
string Person::get_name() const
{
return name;
}
const DayOfYear Person::get_birthday() const
{
return birthday;
}
void Person::set_id(int new_id)
{
id = new_id;
}
void Person::set_name(string new_name)
{
name = new_name;
}
void Person::set_birthday(DayOfYear date)
{
birthday = date;
}
string Person::getEmail( int i) const
{
if (i>=0 && i<numEmails)
return emails[i];
else
return "NA";
}
void Person::add_email( string the_email)
{
//case 1: emails list is empty
if ( numEmails == 0){
emails = new string[1];
//verification
emails[0] = the_email;
}
else { //case 2: expand the list
string *tmp_emails=new string [numEmails];
for (int i=0; i<numEmails; i++) //save the emails
tmp_emails[i] = emails[ i ];
delete [] emails;
emails = new string [numEmails+1]; //expand the list by one
//verify the above allocation
for ( int i=0; i<numEmails; i++)
emails[ i ] = tmp_emails[ i ]; //copy the existing emails
emails[ numEmails ] = the_email; // add the new email
delete [] tmp_emails;
}
numEmails += 1;
}
int Person::get_num_emails() const
{
return numEmails;
}
void print( const Person& someone)
{
cout << "****"<<someone.get_id() << " " << someone.get_name() <<endl;
}
//perform a sequential search on the studentList
bool searchStudent( Person *studentList, int num_students, int key)
{
for ( int i=0; i<num_students; i++){
if ( studentList[ i ].get_id() == key )//found
return true;
}//for (i)
return false; //none of the students has ID=key
}
bool sameID(const Person& person1, const Person& person2)
{
return (person1.get_id() == person2.get_id());
}
bool equalID(const Person& person1, const Person& person2)
{
return (person1.id == person2.id);
}
Note that your project doesn't need to include the Student class. In other words, your project will include Person as the base class, and Employee as the derived one of Person. Specifically, the Employee class will include the following data members:
employment date
current annual salary
base salary
a dynamic array to keep track of the annual salary increase rate since the year of employment. For instance, an employee might have a 10%, 15%, and 12% increases in the past three years. This dynamic array will hold the following three numbers: 0.1, 0.15, and 0.12.
At the minimum, your Employee class needs to include the following function members:
a default constructor
the big-3
an accessor and mutator for each of the above data members
an overloaded put operator (<<) to print out all the information in an Employee object
redefine the output() function in the base class.
Please provide a simple character-based interface to allow the ability to test each of the above member functions.
Explanation / Answer
person.cpp
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