Question

Trying to pass a pointer through the function bool CustomerList::updateStore() that will allow me to modify an input.

Ex.

(1234, "Name", "Street Address", "City", "State", "Zip")

Using the function bool CustomerList::updateStore()

Updating..successful

New Address:

(0001, "Store", "111 Main St.", "Townsville", "GA", "67893")

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)
{
  
   //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()))
   {
       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.\n" ;
   }
   else
   {

       temp = m_pHead;
       while(temp != NULL)
       {
           cout << temp->m_pNext << endl;
       }
   }
}

Store.h

#pragma once;

#include <string.h>
#include <iostream>

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);
       void printStoreInfo();           // Print all info on this store
};

Store.cpp

#include "Store.h"
#include <iomanip>

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)
{
   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);
   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 << "\n";
}

Answer 1

NOTE: Store_ID will remain same. If you want to change that, you need to give new store_ID in updateStore arguments and add

temp->m_iStoreID = new_ID;

in the else loop.

bool CustomerList::updateStore(int ID, char *name, char *addr, char *city, char *st, char *zip)
{
Store *temp;

   temp = m_pHead;

   while((temp != NULL) && (ID != temp ->getStoreID()))
   {
       temp = temp->m_pNext;
   }

   if(temp == NULL)
       return false;

   else
   {
strcpy(temp->m_sStoreName, name);

strcpy(temp->m_sAddress, addr);

strcpy(temp->m_sCity, city);

strcpy(temp->m_sState, st);

strcpy(temp->m_sZip, zip);

return true;

   }

}