The customer list class was modified to initialize the head pointer to null in the constructor and delete it in the destructor. The printStoresInfo function was updated to iterate through the linked list by accessing each node's printStoreInfo method rather than its next pointer. These changes address the error caused by an uninitialized head pointer and allow the stores information to be properly printed.

1. I keep getting an error about m_pHead in printStoresInfo(); function in the cpp file.
CustomerList.h
#pragma once;
#include
#include "Store.h"
class CustomerList
{
public:
Store *m_pHead;
CustomerList();
~CustomerList();
bool addStore(Store *s);
Store *removeStore(int ID);
Store *getStore(int ID);
bool updateStore(int ID, char *name, char *addr, char *city, char *st, char *zip);
void printStoresInfo();
};
CustomerList.cpp
#include
#include "CustomerList.h"
#include "Store.h"
using namespace std;
CustomerList::CustomerList()
{
// Default constructor
}
CustomerList::~CustomerList()
{
// Destructor
}
bool CustomerList:: addStore(Store *s)
{

2. //creating a new instance
s = new Store();
if(s==NULL)
return true;
}
Store *CustomerList::removeStore(int ID)
{
Store *temp, *back;
temp = m_pHead;
back = NULL;
while((temp != NULL)&&(ID != temp ->getStoreID()))
{
back=temp;
temp=temp->m_pNext;
}
if(temp==NULL)
return NULL;
else if(back==NULL)
{
m_pHead = m_pHead ->m_pNext;
return temp;
}
else
{
back -> m_pNext = temp-> m_pNext;
return temp;
}
return NULL;
}
Store *CustomerList::getStore(int ID)
{
Store *temp;
temp = m_pHead;
while((temp != NULL) && (ID != temp ->getStoreID()))

3. {
temp = temp->m_pNext;
}
if(temp == NULL)
return NULL;
else
{
Store *retStore = new Store;
*retStore = *temp;
retStore->m_pNext = NULL;
return retStore;
}
}
bool CustomerList::updateStore(int ID, char *name, char *addr, char *city, char *st, char *zip)
{
return false;
}
void CustomerList::printStoresInfo()
{
Store *temp;
cout << "
=====================================================================
================ " << endl;
if(m_pHead == NULL)
{
cout << " The List is currently empty. " ;
}
else
{
temp = m_pHead;
while(temp != NULL)
{
cout << temp->m_pNext << endl;
}
}
}

4. Store.h
#pragma once;
#include
#include
using namespace std;
class Store
{
private:
int m_iStoreID;
char m_sStoreName[64];
char m_sAddress[64];
char m_sCity[32];
char m_sState[32];
char m_sZip[11];
public:
Store *m_pNext;
Store(); // Default constructor
Store(int ID, // Constructor
char *name,
char *addr,
char *city,
char *st,
char *zip);
~Store(); // Destructor
int getStoreID(); // Get/Set store ID
void setStoreID(int ID);
char *getStoreName(); // Get/Set store name
void setStoreName(char *name);
char *getStoreAddress(); // Get/Set store address
void setStoreAddress(char *addr);
char *getStoreCity(); // Get/Set store city
void setStoreCity(char *city);
char *getStoreState(); // Get/Set store state
void setStoreState(char *state);
char *getStoreZip(); // Get/Set store zip code
void setStoreZip(char *zip);

5. void printStoreInfo(); // Print all info on this store
};
Store.cpp
#include "Store.h"
#include
using namespace std;
Store::Store()
{
m_pNext = NULL;
}
Store::Store(int ID, char *name, char *addr, char *city, char *st, char *zip)
{
m_iStoreID = ID;
strcpy(m_sStoreName, name);
strcpy(m_sAddress, addr);
strcpy(m_sCity, city);
strcpy(m_sState, st);
strcpy(m_sZip, zip);
m_pNext = NULL;
}
Store::~Store()
{
// Nothing to do here
}
int Store::getStoreID()
{
return m_iStoreID;
}
void Store::setStoreID(int ID)
{

6. m_iStoreID = ID;
}
char *Store::getStoreName()
{
char *name = new char[strlen(m_sStoreName) + 1];
strcpy(name, m_sStoreName);
return name;
}
void Store::setStoreName(char *name)
{
strcpy(m_sStoreName, name);
}
char *Store::getStoreAddress()
{
char *addr = new char[strlen(m_sAddress) + 1];
strcpy(addr, m_sAddress);
return addr;
}
void Store::setStoreAddress(char *addr)
{
strcpy(m_sAddress, addr);
}
char *Store::getStoreCity()
{
char *city = new char[strlen(m_sCity) + 1];
strcpy(city, m_sCity);
return city;
}
void Store::setStoreCity(char *city)
{

7. strcpy(m_sCity, city);
}
char *Store::getStoreState()
{
char *state = new char[strlen(m_sState) + 1];
strcpy(state, m_sState);
return state;
}
void Store::setStoreState(char *state)
{
strcpy(m_sState, state);
}
char *Store::getStoreZip()
{
char *zip = new char[strlen(m_sZip) + 1];
strcpy(zip, m_sZip);
return zip;
}
void Store::setStoreZip(char *zip)
{
strcpy(m_sZip, zip);
}
void Store::printStoreInfo()
{
cout << m_iStoreID << setw(20) << m_sStoreName << setw(15) << m_sAddress
<< setw(15) << m_sCity << ", " << m_sState << setw(10) << m_sZip << " ";
}
Solution
Made changes to the following files

8. PROGRAM CODE:
CustomerList.cpp
/*
* CustomerList.cpp
*
* Created on: 25-Feb-2017
* Author: kasturi
*/
#include
#include "CustomerList.h"
#include "Store.h"
using namespace std;
CustomerList::CustomerList()
{
m_pHead = NULL;
// Default constructor
}
CustomerList::~CustomerList()
{
delete m_pHead;
// Destructor
}
bool CustomerList:: addStore(Store *s)
{
//creating a new instance
if(m_pHead==NULL)
{
m_pHead = new Store(s->getStoreID(),s->getStoreName(), s->getStoreAddress(), s-
>getStoreCity(), s->getStoreState(), s->getStoreZip());
return true;
}
else
{
Store * temp;
temp=m_pHead;
while(temp->m_pNext != NULL)

9. {
temp = temp->m_pNext;
}
temp->m_pNext = new Store(s->getStoreID(),s->getStoreName(), s->getStoreAddress(), s-
>getStoreCity(), s->getStoreState(), s->getStoreZip());
return true;
}
}
Store *CustomerList::removeStore(int ID)
{
Store *temp, *back;
temp = m_pHead;
back = NULL;
while((temp != NULL)&&(ID != temp ->getStoreID()))
{
back=temp;
temp=temp->m_pNext;
}
if(temp==NULL)
return NULL;
else if(back==NULL)
{
m_pHead = m_pHead ->m_pNext;
return temp;
}
else
{
back -> m_pNext = temp-> m_pNext;
return temp;
}
return NULL;
}
Store *CustomerList::getStore(int ID)
{
Store *temp;
temp = m_pHead;

10. while((temp != NULL) && (ID != temp ->getStoreID()))
{
temp = temp->m_pNext;
}
if(temp == NULL)
return NULL;
else
{
Store *retStore = new Store;
*retStore = *temp;
retStore->m_pNext = NULL;
return retStore;
}
}
bool CustomerList::updateStore(int ID, char *name, char *addr, char *city, char *st, char *zip)
{
return false;
}
void CustomerList::printStoresInfo()
{
Store *temp;
cout << "
=====================================================================
================ " << endl;
if(m_pHead == NULL)
{
cout << " The List is currently empty. " ;
}
else
{
temp = m_pHead;
while(temp != NULL)
{
temp->printStoreInfo();
temp = temp->m_pNext;
}

11. }
}
Store.cpp
/*
* Store.cpp
*
* Created on: 25-Feb-2017
* Author: kasturi
*/
#include "Store.h"
#include
using namespace std;
Store::Store()
{
m_pNext = NULL;
}
Store::Store(int ID, char *name, char *addr, char *city, char *st, char *zip)
{
m_iStoreID = ID;
strcpy(m_sStoreName, name);
strcpy(m_sAddress, addr);
strcpy(m_sCity, city);
strcpy(m_sState, st);
strcpy(m_sZip, zip);
m_pNext = NULL;
}
Store::~Store()
{
// Nothing to do here
}
int Store::getStoreID()
{
return m_iStoreID;
}
void Store::setStoreID(int ID)
{

12. m_iStoreID = ID;
}
char *Store::getStoreName()
{
char *name = new char[strlen(m_sStoreName) + 1];
strcpy(name, m_sStoreName);
return name;
}
void Store::setStoreName(char *name)
{
strcpy(m_sStoreName, name);
}
char *Store::getStoreAddress()
{
char *addr = new char[strlen(m_sAddress) + 1];
strcpy(addr, m_sAddress);
return addr;
}
void Store::setStoreAddress(char *addr)
{
strcpy(m_sAddress, addr);
}
char *Store::getStoreCity()
{
char *city = new char[strlen(m_sCity) + 1];
strcpy(city, m_sCity);
return city;
}
void Store::setStoreCity(char *city)
{
strcpy(m_sCity, city);
}
char *Store::getStoreState()
{
char *state = new char[strlen(m_sState) + 1];
strcpy(state, m_sState);

13. return state;
}
void Store::setStoreState(char *state)
{
strcpy(m_sState, state);
}
char *Store::getStoreZip()
{
char *zip = new char[strlen(m_sZip) + 1];
strcpy(zip, m_sZip);
return zip;
}
void Store::setStoreZip(char *zip)
{
strcpy(m_sZip, zip);
}
void Store::printStoreInfo()
{
cout << m_iStoreID << setw(20) << m_sStoreName << setw(15) << m_sAddress
<< setw(15) << m_sCity << ", " << m_sState << setw(10) << m_sZip << " ";
}
//I used this main file for texting
simpleMain.cpp
/*
* simpleMain.cpp
*
* Created on: 25-Feb-2017
* Author: kasturi
*/
#include "Store.h"
#include "CustomerList.h"
#include
int main()
{
CustomerList list;
list.printStoresInfo();

14. Store s1(123, "KS Stores", "Wells Street", "New York", "New York", "A50032");
Store s2(124, "Free Stores", "Wall Street", "New York", "New York", "A50032");
Store s3(125, "Real Stores", "KC Street", "Washington", "Washington D.C",
"D50032");
list.addStore(&s1);
list.addStore(&s2);
list.addStore(&s3);
list.removeStore(124);
list.printStoresInfo();
return 0;
}
OUTPUT:
=====================================================================
================
The List is currently empty.
=====================================================================
================
123 KS Stores Wells Street New York, New York A50032
125 Real Stores KC Street Washington, Washington D.C D50032