IntArray Class Exception

Chapter $14$ presented an IntArray class that dynamically creates an

array of integers and performs bounds checking on the array. If an

invalid subscript is used with the class, it displays an error message and aborts the program. Modify the class so it throws an exception instead.

$2$ headers, and $2.$ccp modules

My cpp file is included

$//$ Implementation file for the IntArray class

#include

#include "BadSubscript.h$"$

#include "IntArray.h$"$

using namespace std;

$//*******************************************************$

$//$ Constructor for IntArray class. Sets the size of the $*$

$//$ array and allocates memory for it$.*$

$//*******************************************************$

IntArray::IntArray$($int s$)$

$\{$

arraySize $=$ s;

aptr $=$ new int $[$s$]$;

for $($int count $=0$; count $$ arraySize; count$++)$

$*($aptr $+$ count$)=0$;

$\}$

$//******************************************************$

$//$ Copy Constructor for IntArray class. $*$

$//******************************************************$

IntArray::IntArray$($const IntArray &obj$)$

$\{$

arraySize $=$ obj.arraySize;

aptr $=$ new int $[$arraySize$]$;

for$($int count $=0$; count $$ arraySize; count$++)$

$*($aptr $+$ count$)=*($obj$.$aptr $+$ count$)$;

$\}$

$//******************************************************$

$//$ Destructor for IntArray class. $*$

$//******************************************************$

IntArray::~IntArray$()$

$\{$

if $($arraySize $>0)$

$\{$

delete $[]$ aptr;

aptr $=$ nullptr;

$\}$

$\}$

$//***********************************************************$

$//$ subscriptError function. Throws a BadSubscript exception $*$

$//$ when a subscript is out of range. $*$

$//***********************************************************$

void IntArray::subscriptError$($int sub$)$

$\{$

throw BadSubscript$($sub$)$;

$\}$

$//*******************************************************$

$//$ Overloaded $[]$ operator. The argument is a subscript. $*$

$//$ This function returns a reference to the element $*$

$//$ in the array indexed by the subscript. $*$

$//*******************************************************$

int &IntArray::operator$[]($const int &sub$)$

$\{$

if $($sub $<mtext></mtext><mn>0</mn><mtext></mtext><mi>|</mi><mi>|</mi>$ sub $>=$ arraySize$)$

subscriptError$($sub$)$;

return aptr$[$sub$]$;

$\}$