#include <iostream>
#include <cstdlib>
#include <string>
#include <fstream>
#include <math.h>
#include <ctype.h>
//Ebrahim Sharif
//ECE 370
//1-16-2008
 
using namespace std;
 
void getPersonalInfo();//function prototypes
int Str2Int(string InpStr);
long Str2Long(string);
void lookupPerson( char );
 
struct personalInfo
{
      string name;
      int Age;
      long ssn;
      string Address;
};
ifstream readfile;
string readfilename = "a1.txt";//read in file
personalInfo person[12];
int NumberOfPeople;
 
int main()
{
    cout<<"*********Assinment number one******"<<endl<<endl;
 
    int i,j,; 
    bool stoploop;
    char lastInitial;
    char letter;
 
 
   //Step 1: Openning files
    readfile.open(readfilename.c_str());
 
 
    if (readfile.fail())//checking if file exists
    {
        cout<<"\n chech and make sure that there is an existing input file."<<endl;
        system ("PAUSE");
        return 0;
 
    }
    else
    { 
      cout<<"\nfile is found and was opened"<<endl;
      cout<<"                                                                      "<<endl;      
    }   
 
    //Step 2: finction 1 to read files
    getPersonalInfo();
 
   //Step 3: cout all persons Info
   for (j=0;j<NumberOfPeople ; j++)
   {
    cout << person[j].name <<endl;
    cout << person[j].Age <<endl;
    cout << person[j].ssn<<endl;
    cout << person[j].Address << endl;
    cout << endl;
   }
 
  //Step 4: looking up or searching persons
  stoploop = false;
  do 
  {
      cout<<"********** search center ***********"<<endl<<endl;    
     cout << "Enter Last Name Initial to look up person : ";        
     cin>>lastInitial;       
 
     lookupPerson(lastInitial);
 
     cout << "Do you want to search again press any key otherwise 'N' or 'n' to quit : ";        
     cin>>letter;       
 
     if(letter == 'N' || letter == 'n')
     {
 
             stoploop = true;//stop searching
     }
     else
     {
            stoploop = false;   //keep asking for search      
     }          
 
     }while(!stoploop);
 
 
  //Step : Close Files
  readfile.close();
 
 
    system ("PAUSE");
    return 0;
 }
 
void getPersonalInfo()
{
     int i;
     string temp; //temperary memory for convertion
     string space;
 
 
    i=0;//First Person (0th element) 
 
    while (readfile)
     {
          getline(readfile,person[i].name);//get person's name
 
          getline(readfile,temp);//get age and convert to int
          person[i].Age = Str2Int(temp); 
 
          getline(readfile,temp);//get ssn and conveert to long
          person[i].ssn = Str2Long(temp);
 
          getline(readfile,person[i].Address);  //get persons sddress                        
 
          getline(readfile,space); // skip line                         
 
          i++;//loop for next person
     }
 
     NumberOfPeople = i;
 
} 
 
int Str2Int(string InpStr)
{
    char *str_ptr;
	int Strlength;
    int Outputage;
    int i;
 
    Strlength = InpStr.length();//get Length of the string
 
    str_ptr = new char[Strlength]; // allocate memory needed for the input string
 
   	for (i = 0; i < Strlength; i++)//copy string to a poiunter for conversion need
		str_ptr[i] = InpStr[i];
 
    Outputage = atoi (str_ptr);//(alphabetic to integer)
 
 
    return (Outputage);
}
 
long Str2Long(string InpStr)
{
    char *str_ptr;
	int Strlength;
    long outputssn;
    int i;
 
    Strlength = InpStr.length();
 
    str_ptr = new char[Strlength];
 
    for (i = 0; i < Strlength; i++)
	{
        	str_ptr[i] = InpStr[i];
    }
 
    outputssn = atol(str_ptr);
 
    return (outputssn);
}
 
    void lookupPerson(char lastInitial)
     {
     int j;
     bool PersonFound ;
 
     for (j=0;j<NumberOfPeople ; j++)
     {
         if(toupper(person[j].name[0]) == toupper(lastInitial))
         {   //display on screen
             cout << person[j].name <<endl;
             cout << person[j].Age <<endl;
             cout << person[j].ssn <<endl;
             cout << person[j].Address << endl;
             cout << endl;
 
             PersonFound = true;
         }
   }
 
   if(PersonFound == false)
   {
     cout<<"No one is found with a Last name initial '"<<lastInitial<<"'."<<endl<<endl;              
   }
 
}