#include <iostream>
#include <cmath>
#include <iomanip>
#include <cctype>
#include <fstream>
#include <string>
 
using namespace std;
 
enum phoneNumType {work, home, cell, };
 
struct resident{
    string ssn;          // social security number
    char firstInitial;   // first initial of resident
    string lastName;     // last name of resident
    string phoneNum;     // phone number of resident
    phoneNumType type;   // phone number type (cell, home, or work)
    resident* next;      // points to next node
};
 
const int MAX_NUM_RESIDENTS = 500;
 
const string RES_FILENAME = "RESIDENTS.TXT";
 
// PROTOTYPES OF FUNCTIONS LISTED HERE
 
[COLOR="red"]int main()[/COLOR]
{
 
 
[COLOR="red"]    Read_File(listTop, residentCount);
    Process_Menu_Choice(menuChoice, listTop, residentCount);[/COLOR]
 
 
}
 
[COLOR="red"]void Read_File(resident *listTop, int &residentCount)[/COLOR]
{
 
 
    residentCount = 0; // number of residents in array of records
 
    int newAdd; // determines whether user is adding new resident at beginning
                // of file or from main menu
 
    fstream inFile;
    resident *oneResident, 
                *listTop = NULL,
                *listBottom = NULL;
 
    // Following are temp variables that hold values while being read in from file     
    char temp,
           oneFirstInitial,
           pauseChar;
    string oneLastName,
             onePhoneNum,
             oneSsn;
 
    inFile.open(RES_FILENAME.c_str());
 
    if (!inFile) 
        cout << "Error opening data file" << endl; 
 
    else {     // Data file opened successfully 
 
    do
    { 
         inFile >> oneSsn >> oneFirstInitial >> oneLastName >> onePhoneNum >> temp;
 
        if (inFile)
        {
 
            oneResident = new (nothrow) resident;
 
            if (oneResident == NULL)
            {
                cout << "Heap error - could not allocate memory" << endl; 
                cin >> pauseChar; 
             } 
 
             else
             {
 
             oneResident->ssn = oneSsn;
             oneResident->firstInitial = oneFirstInitial;
             oneResident->lastName = oneLastName;
             oneResident->phoneNum = onePhoneNum;
 
 
             if (temp == 'W')
                 oneResident->type = work;
             else if (temp == 'H')
                 oneResident->type = home;
             else if (temp == 'C')
                 oneResident->type = cell;
 
             oneResident->next = NULL;
 
             }
 
             if (listTop == NULL)
             {
                 listBottom = oneResident;
                 listTop = oneResident;
             }
 
             else 
             {
                  listBottom->next = oneResident;
                  listBottom = oneResident;
             }
 
          } // end of if
 
           residentCount++;
 
   } while ( inFile && (oneResident != NULL) );
 
   } // ends else
 
}
 
[COLOR="red"]void Process_Menu_Choice(char menuChoice, resident *listTop, 
                         int &residentCount)[/COLOR]
{
     cout << endl;
 
     while (menuChoice != 'e')
     {
           menu(menuChoice);
 
           if (menuChoice == 's')
               [COLOR="red"]Display_Residents(listTop, residentCount);[/COLOR]
 
 
     }
 
}
 
 
[COLOR="red"]void Display_Residents(resident *listTop, int &residentCount)[/COLOR]
{
    listTop = NULL;
    int test = 0;
    resident *oneResident;
 
    cout << endl << setw(5) << "Name" << setw(18) << "SSN" << setw(15)
         << "Phone" << setw(14) << "Type" << endl
         << "-----------------  -----------  -------------  ------"
         << endl << endl;         
 
    oneResident = listTop;
 
    while (oneResident !=NULL)
    {
 
      cout << oneResident->firstInitial << " " << setw(17) << left
           << oneResident->lastName << setw(10) << right
           << oneResident->ssn << setw(15)
           << oneResident->phoneNum << "   ";
 
           if  (oneResident->type == work)
                  cout << "Work";
           else if  (oneResident->type == home)
                  cout << "Home";
           else if  (oneResident->type == cell)
                  cout << "Cell";
 
       cout << endl;
 
       oneResident = oneResident->next;
 
    } 
 
   cout << endl;   
   system ("PAUSE");   
}