$```$

$$ "Date: $"$ dateValue

$$ "Main Author: Prof. Donathan Matthew, PhD$,$ SCJP In$"$

All Rights Reserved

$//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++$

$//$ End of DO NOT modify

return $0$;

$\}$

$//$ Implementation for the IntStach class

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

$//$ Constructor

$//$ This constructor creates an empty stack. The $*$

$//$ size parameter is the size of the stack. $*$

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

IntStack::IntStack$($int size$)$

$\{$

stackArray $=$ new int$[$size$]$;

stackSize $=$ size;

top $=-1$;

$\}$

$``````$

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

$//$ Copy constructor

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

IntStack::IntStack$($const IntStack &obj$)$

$\{$

$//$ Create the stack array.

if $($obj$.$stackSize $>0)$

stackArray $=$ new int$[$obj$.$stackSize$]$;

else

stackArray $=$ nullptr;

$//$ Copy the stackSize attribute.

stackSize $=$ obj.stackSize;

$//$ Copy the stack contents.

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

stackArray$[$count$]=$ obj.stackArray$[$count$]$;

$//$ Set the top of the stack.

top $=$ obj.top;

$\}$

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

$//$ Destructor

$``````$

IntStack:: IntStack$()$

$\{$

delete $[]$ stackArray;

$\}$

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

$//$ Member function push pushes the argument onto $*$

$//$ the stack.

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

void IntStack::push$($int num$)$

$\{$

if $($isFull$())$

$\{$

cout $$ "The stack is full.

$"$;

$\}$

else

$\{$

top$++$;

stackArray$[$top$]=$ num;

$\}$

$\}$

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

$//$ Member function pop pops the value at the top

$``````$

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

$//$ Member function pop pops the value at the top

$//$ of the stack off, and copies it into the variable

$//$ passed as an argument.

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

void IntStack::pop$($int &num$)$

$\{$

if $($isEmpty$())$

$\{$

cout $$ "The stack is empty.

$"$;

$\}$

else

$\{$

num $=$ stackArray$[$top$]$;

top$--$;

$\}$

$\}$

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

$//$ Member function isFull returns true if the stack $*$

$//$ is full, or false otherwise.

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

bool IntStack::isFull$()$ const

$``````$

$\{$

bool status;

if $($top $==$ stackSize $-1)$

status $=$ true;

else

status $=$ false;

return status;

$\}$

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

$//$ Member funciton isEmpty returns true if the stack $*$

$//$ is empty, or false otherwise.

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

bool IntStack::isEmpty$()$ const

$\{$

bool status;

if $($top $==-1)$

status $=$ true;

else

status $=$ false;

return status;

$```$