***Question part:

You need to implement the same class as GIVEN IN EXAMPLE BELOW, but this time implement the STACK AS A SINGLE LINKED LIST. The test of the class should be done with the SAME MAIN FUNCTION as in the example. Please do not change the main function to avoid losing points.

Please place head comments AND comments to each function just like in the example for full credit

"HighestGPAData.txt"

3.4 Randy 3.2 Kathy 2.5 Colt 3.4 Tom 3.8 Ron 3.8 Mickey 3.6 Peter 3.5 Donald 3.8 Cindy 3.7 Dome 3.9 Andy 3.8 Fox 3.9 Minnie 2.7 Gilda 3.9 Vinay 3.4 Danny

Question part ENDS here ********

/// This program uses the class myStack to determine the

/// highest GPA from a list of students with their GPA.

/// The program also outputs the names of the students

/// who received the highest GPA.

///*********************************************************

///Header file: myStack.h

//#ifndef H_StackType

//#define H_StackType

#include

#include

#include

#include

#include

///#include "stackADT.h"

using namespace std;

template

class stackType /*: public stackADT*/

{

public:

const stackType& operator=(const stackType&);

///Overload the assignment operator.

void initializeStack();

///Function to initialize the stack to an empty state.

///Postcondition: stackTop = 0

bool isEmptyStack() const;

///Function to determine whether the stack is empty.

///Postcondition: Returns true if the stack is empty,

/// otherwise returns false.

bool isFullStack() const;

///Function to determine whether the stack is full.

///Postcondition: Returns true if the stack is full,

/// otherwise returns false.

void push(const Type& newItem);

///Function to add newItem to the stack.

///Precondition: The stack exists and is not full.

///Postcondition: The stack is changed and newItem

/// is added to the top of the stack.

Type top() const;

///Function to return the top element of the stack.

///Precondition: The stack exists and is not empty.

///Postcondition: If the stack is empty, the program

/// terminates; otherwise, the top element

/// of the stack is returned.

void pop();

///Function to remove the top element of the stack.

///Precondition: The stack exists and is not empty.

///Postcondition: The stack is changed and the top

/// element is removed from the stack.

stackType(int stackSize = 100);

///constructor

///Create an array of the size stackSize to hold

///the stack elements. The default stack size is 100.

///Postcondition: The variable list contains the base

/// address of the array, stackTop = 0, and

/// maxStackSize = stackSize.

stackType(const stackType& otherStack);

//copy constructor

~stackType();

///destructor

///Remove all the elements from the stack.

///Postcondition: The array (list) holding the stack

/// elements is deleted.

private:

int maxStackSize; ///variable to store the maximum stack size

int stackTop; ///variable to point to the top of the stack

Type *list; ///pointer to the array that holds the

///stack elements

void copyStack(const stackType& otherStack);

///Function to make a copy of otherStack.

///Postcondition: A copy of otherStack is created and

/// assigned to this stack.

};

template

void stackType::initializeStack()

{

stackTop = 0;

}///end initializeStack

template

bool stackType::isEmptyStack() const

{

return (stackTop == 0);

}///end isEmptyStack

template

bool stackType::isFullStack() const

{

return (stackTop == maxStackSize);

} ///end isFullStack

template

void stackType::push(const Type& newItem)

{

if (!isFullStack())

{

list[stackTop] = newItem; ///add newItem to the

///top of the stack

stackTop++; ///increment stackTop

}

else

cout << "Cannot add to a full stack." << endl;

}///end push

template

Type stackType::top() const

{

assert(stackTop != 0); ///if stack is empty,

///terminate the program

return list[stackTop - 1]; ///return the element of the

///stack indicated by

///stackTop - 1

}///end top

template

void stackType::pop()

{

if (!isEmptyStack())

stackTop--; //decrement stackTop

else

cout << "Cannot remove from an empty stack." << endl;

}///end pop

template

stackType::stackType(int stackSize)

{

if (stackSize <= 0)

{

/// note that cin and cout are not giof candidates to be ghere----done for the sake of simplicity.......

cout << "Size of the array to hold the stack must "

<< "be positive." << endl;

cout << "Creating an array of size 100." << endl;

maxStackSize = 100;

}

else

maxStackSize = stackSize; ///set the stack size to

///the value specified by

///the parameter stackSize

stackTop = 0; ///set stackTop to 0

list = new Type[maxStackSize]; ///create the array to

///hold the stack elements

}///end constructor

template

stackType::~stackType() ///destructor

{

delete [] list; ///deallocate the memory occupied

///by the array

}///end destructor

template

void stackType::copyStack

(const stackType& otherStack)

{

delete [] list;

maxStackSize = otherStack.maxStackSize;

stackTop = otherStack.stackTop;

list = new Type[maxStackSize];

///copy otherStack into this stack

for (int j = 0; j < stackTop; j++)

list[j] = otherStack.list[j];

} ///end copyStack

template

stackType::stackType(const stackType& otherStack)

{

list = nullptr;

copyStack(otherStack);

}///end copy constructor

template

const stackType& stackType::operator=

(const stackType& otherStack)

{

if (this != &otherStack) ///avoid self-copy

copyStack(otherStack);

return *this;

} ///end operator=

//#endif

//#include

//#include

//#include

//#include

//#include "myStack.h"

using namespace std;

int main()

{

///Step 1

double GPA;

double highestGPA;

string name;

stackType stack(100);

ifstream infile;

infile.open("HighestGPAData.txt"); //Step 2

if (!infile) //Step 3

{

cout << "The input file does not "

<< "exist. Program terminates!"

<< endl;

return 1;

}

cout << fixed << showpoint; //Step 4

cout << setprecision(2); //Step 4

infile >> GPA >> name; //Step 5

highestGPA = GPA; //Step 6

while (infile) //Step 7

{

if (GPA > highestGPA) //Step 7.1

{

stack.initializeStack(); //Step 7.1.1

if (!stack.isFullStack()) //Step 7.1.2

stack.push(name);

highestGPA = GPA; //Step 7.1.3

}

else if (GPA == highestGPA) //Step 7.2

if (!stack.isFullStack())

stack.push(name);

else

{

cout << "Stack overflows. "

<< "Program terminates!"

<< endl;

return 1; //exit program

}

infile >> GPA >> name; //Step 7.3

}

cout << "Highest GPA = " << highestGPA

<< endl; //Step 8

cout << "The students holding the "

<< "highest GPA are:" << endl;

while (!stack.isEmptyStack()) //Step 9

{

cout << stack.top() << endl;

stack.pop();

}

cout << endl;

return 0;

}