PROJECT.BAK

/*essential header files*/
#include<stdlib.h>
#include<fstream.h>
#include<process.h>
#include<iostream.h>
#include<conio.h>
#include<string.h>
#include<stdio.h>
#include<ctype.h>
/*functions declarations*/
void search_rec(unsigned long);
void del_rec(unsigned long);
void modify_rec(unsigned long);
/*class defination*/
class contact_record
{
  char name[50];
  unsigned long recno;
  long double phoneno;
  char emailid[100];
  char address[50];
  char cityname[50];
  unsigned long int pincode;
  public:
	 void in_rec();
	 void out_rec(unsigned long);
	 void mod_rec(unsigned long);
	 unsigned long return_recno()
	 {
	   return recno;
	 }
}ob1;
//To enter a record
void contact_record::in_rec()
{
   cout<<"\nEnter record number :- ";
   cin>>recno;
   cout<<"\nEnter details of person :- \n\tName :- ";
   gets(name);
   cout<<"\tPhone number :- ";
   cin>>phoneno;
   cout<<"\tEmail id :- ";
   gets(emailid);
   cout<<"\tAddress :- ";
   gets(address);
   cout<<"\tResidence city name :- ";
   gets(cityname);
   cout<<"\tCity pincode :- ";
   cin>>pincode;
}
//To display a record
void contact_record::out_rec(unsigned long rno)
{
  char found='n';
  ifstream fin;
  fin.open("Contact_info",ios::in|ios::binary);
  while(!(fin.eof()))
  {
    fin.read((char*)&ob1,sizeof(ob1));
    if(ob1.return_recno()==rno)
    {
      clrscr();
      found='y';
      cout<<"Details are :- ";
      cout<<"\nName :- "<<ob1.name;
      cout<<"\nRecord number :- "<<ob1.recno;
      cout<<"\nPhone number :- "<<ob1.phoneno;
      cout<<"\nEmail ID :- "<<ob1.emailid;
      cout<<"\nAddress :- "<<ob1.address;
      cout<<"\nCity name :- "<<ob1.cityname;
      cout<<"\nCity pincode :- "<<ob1.pincode;
    }
  }
  if(found=='n')
		cout<<"Record not found";
}
//To search for a record
void search_rec(unsigned long rno)
{
  ifstream fin;
  cout<<"SEARCH";
  fin.open("Contact_info",ios::in|ios::binary);
  int found=0;
  fin.seekg(0);
  while(!(fin.eof()))
  {
    fin.read((char*)&ob1,sizeof(ob1));
    if(ob1.return_recno()==rno)
    {
      found=1;
      cout<<"Record Found!!!\n";
      ob1.out_rec(rno);
      break;
    }
  }
  if(found==0)
	cout<<"\n!!!Record not found!!!";
}
//To delete a record
void del_rec(unsigned long rno)
{
  unsigned long rn;
  ifstream fin;
  fin.open("Contact_info",ios::in|ios::binary);
  ofstream fout;
  fout.open("TMP",ios::out|ios::binary);
  while(!(fin.eof()))
  {
    fin.read((char*)&ob1,sizeof(ob1));
    rn=ob1.return_recno();
    if(rn!=rno)
    {
      fout.write((char*)&ob1,sizeof(ob1));
    }
  }
  fin.close();
  fout.close();
  remove("Contact_info");
  rename("TMP","Contact_info");
  cout<<"Record successfully deleted!!!!\n";
}
//To modify a record
void contact_record::mod_rec(unsigned long rno)
{
	char a;
	char b[50];
	unsigned long c;
	unsigned long int d;
	cout<<"Original details are:-";
	ob1.out_rec(rno);
	cout<<"Enter new details :- ";
	cout<<"Name(.to retain original value): ";
	gets(b);
	if(strcmp(b,"."))
	{
	  strcpy(ob1.name,b);
	}
	cout<<"phone number (0 to retain original) :- ";
	cin>>c;
	if(c!=0)
	{
	  ob1.phoneno=c;
	}
	cout<<"Email ID (.to retain original value):- ";
	gets(b);
	if(strcmp(b,"."))
	{
	  strcpy(ob1.emailid,b);
	}
	cout<<"Address(.to retain original value):- ";
	gets(b);
	if(strcmp(b,"."))
	{
	  strcpy(ob1.address,b);
	}
	cout<<"City Name(.to retain original value) :- ";
	gets(b);
	if(strcmp(b,"."))
	{
	  strcpy(ob1.cityname,b);
	}
	cout<<"City pincode(0 to retain original value) :- ";
	cin>>d;
	if(d!=0)
	{
	  ob1.pincode=d;
	}
	ob1.recno=rno;
}
//To modify a record
void modify_rec(unsigned long rno)
{
  int pos;
  fstream fin;
  fin.open("Contact_info",ios::out|ios::in|ios::binary);
  while(!(fin.eof()))
  {
    pos=fin.tellg();
    fin.read((char*)&ob1,sizeof(ob1));
    if(ob1.return_recno()==rno)
    {
       ob1.mod_rec(rno);
       fin.seekg(pos);
       fin.write((char*)&ob1,sizeof(ob1));
       break;
    }
  }
  fin.close();
}
void main()
{
  clrscr();
  char y;
  int ch;
  contact_record s1;
  unsigned long recordno;
  int choice;
  cout<<"CONTACT INFORMATION SYSTEM\n ";
  start:
  cout<<"\t1)Search a existing record \n";
  cout<<"\t2)Insert a record \n";
  cout<<"\t3)Delete a record\n";
  cout<<"\t4)Modify a record\n";
  cout<<"\t5)Exit\n";
  cout<<"\t\tEnter your choice(1-5)";
  cin>>choice;
  switch(choice)
  {
    case 1:
	    cout<<"Enter record number to be searched for :- ";
	    cin>>recordno;
	    search_rec(recordno);
	    break;
    case 2:
	    s1.in_rec();
	    ofstream fout;
	    fout.open("Contact_info",ios::out|ios::app|ios::binary);
	    fout.write((char*)&s1,sizeof(s1));
	    fout.close();
	    break;
    case 3:
	    cout<<"Enter record number whose record is to be deleted :- ";
	    cin>>recordno;
	    cout<<"Details are :-\n";
	    s1.out_rec(recordno);
	    cout<<"Do you want to delete this record (y\n):- ";
	    cin>>y;
	    if(y=='Y'||y=='y')
			del_rec(recordno);
	    break;
    case 4:
	    cout<<"Enter record number whose record is to be modified :- ";
	    cin>>recordno;
	    modify_rec(recordno);
	    cout<<"!!!Record successfully modified!!!";
	    break;
    case 5:
	    exit(1);
    default:
	    clrscr();
	    cout<<"!!!WRONG CHOICE!!!";
	    goto start;
  }
  cout<<"\n1)Perform more tasks";
  cout<<"\n2)Exit\n";
  cout<<"Enter your choice :- ";
  cin>>ch;
  if(ch==1)
  {
		clrscr();
		goto start;               //to repeat the same process again
  }
  else
		exit(1);
  getch();
}