Give the definitions for the member function addvalue, the...

Give the definitions for the member function add_value, the copy constructor, the overloaded assignment operator, and the destructor for the following class. This class is intended to be a class for a partially filled array. The member variable number_used contains the number of array positions currently filled. The other constructor definition is given to help you get started. #include <iostream #include ecstdlibs using namespace std; class PartFilledArray $f$ public: PartFilledArray( int array_size): PartFilledArray(const PartFilledArray\& object) PartFilledArrayO void operator $=(\text { const PartFilledArray\& right_side })$ void add_value(double new_entry) //There would probably be more member functions //but they are irrelevant to this exercise. protected double $* a$ int max_number: int number_used: 3: PartFilledArray::PartFilledArray(int array_size) max_number(array_size), number_used(\theta) $f$ $a=$ new double[max_number] \} (Many authorities would say that the member variables should be private rather than protected. We tend to agree. However, using protected makes for a better practice assignment, and you should have some experience with protected variables because some programmers do use them.)

Give the definitions for the member function add_value, the copy constructor, the overloaded assignment operator, and the destructor for the following class. This class is intended to be a class for a partially filled array. The member variable number_used contains the number of array positions currently filled. The other constructor definition is given to help you get started.
#include <iostream #include ecstdlibs
using namespace std;
class PartFilledArray
$f$
public:
PartFilledArray( int array_size):
PartFilledArray(const PartFilledArray\& object) PartFilledArrayO void operator $=(\text { const PartFilledArray\& right_side })$ void add_value(double new_entry) //There would probably be more member functions //but they are irrelevant to this exercise. protected
double $* a$ int max_number:
int number_used:
3:
PartFilledArray::PartFilledArray(int array_size) max_number(array_size), number_used(\theta)
$f$
$a=$ new double[max_number]
\}
(Many authorities would say that the member variables should be private rather than protected. We tend to agree. However, using protected makes for a better practice assignment, and you should have some experience with protected variables because some programmers do use them.)

Key Concepts

Destructor

A destructor is a special member function that is automatically called when an object goes out of scope or is explicitly deleted. Its primary role is to free any resources that were allocated during the lifetime of the object, particularly those resources allocated on the heap, thereby preventing memory leaks.

Member Function for Adding Values

A member function for adding values to a partially filled array handles the process of inserting new entries into the array while keeping track of the number of valid elements. This function must ensure that it does not exceed the allocated array size, and it may involve considerations such as resizing or error handling when the array is full.

Copy Constructor

A copy constructor is a special constructor in C++ used to initialize a new object as a copy of an existing object. In the context of classes that use dynamic memory, it is important to perform a deep copy of the dynamic resources rather than simply copying pointer values to avoid shared ownership and potential double deletion errors.

Rule of Three

The Rule of Three is a fundamental principle in C++ which states that if a class manages resources through dynamic memory allocation, then it should explicitly define a copy constructor, an overloaded assignment operator, and a destructor. This ensures proper resource copying and cleanup, preventing shallow copy issues and memory leaks.

Dynamic Memory Management

Dynamic memory management involves allocating and deallocating memory at runtime using mechanisms such as new and delete in C++. It is crucial in classes that use pointers to manage resources that are not automatically managed by the language, ensuring that memory leaks and other resource issues do not occur.

Overloaded Assignment Operator

The overloaded assignment operator is defined to correctly assign one object to another after they have already been constructed. For classes managing dynamic memory, it must deallocate any existing resources in the left-hand object before copying the resources from the right-hand object, ensuring that a deep copy is made to prevent memory management errors.

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