Question
Define a class called PartFilledArrayWMax that is a derived class of the class PartFilledArray. The class PartFilledArrayWMax has one additional
member variable named max_value that holds the maximum value stored
in the array. Define a member accessor function named get_max that
returns the maximum value stored in the array. Redefine the member function add_value and define two constructors, one of which has an int argument for the maximum number of entries in the array. Also define a copy constructor, an overloaded assignment operator, and a destructor. (A real class would have more member functions, but these will do for an exercise.)
Answer
void PartFilledArray::add_value(double new_entry)
{
if (number_used == max_number)
{
cout << "Adding to a full array.\n";
exit(1);
}
else
{
a[number_used] = new_entry;
number_used++;
}
PartFilledArray::PartFilledArray
(const PartFilledArray& object)
: max_number(object.max_number),
number_used(object.number_used)
{
a = new double[max_number];
for (int i = 0; i < number_used; i++)
a[i] = object.a[i];
}
void PartFilledArray::operator =
(const PartFilledArray& right_side)
{
if (right_side.max_number > max_number)
{
delete [] a;
max_number = right_side.max_number;
a = new double[max_number];
}
number_used = right_side.number_used;
for (int i = 0; i < number_used; i++)
a[i] = right_side.a[i];
}
PartFilledArray::~PartFilledArray()
{
deletet[] a;
}