Register, Login, Display Records in C/C++

#include<iostream.h>
#include<fstream.h>
#include<cctype.h>
#include<iomanip.h>
#include<conio.h>
using namespace std;
class account
{
 int acno;
 char name[50];
 int deposit;
 char type;
public:
 void create_account(); 
 void show_account() const; 
 void modify(); 
 void dep(int); 
 void draw(int); 
 void report() const; 
 int retacno() const; 
 int retdeposit() const; 
 char rettype() const; 
};         

void account::create_account()
{
 cout<<"\nEnter The account No. :";
 cin>>acno;
 cout<<"\n\nEnter The Name of The account Holder : ";
 cin.ignore();
 cin.getline(name,50);
 cout<<"\nEnter Type of The account (C/S) : ";
 cin>>type;
 type=toupper(type);
 cout<<"\nEnter The Initial amount(>=500 for Saving and >=1000 for current ) : ";
 cin>>deposit;
 cout<<"\n\n\nAccount Created..";
}

void account::show_account() const
{
 cout<<"\nAccount No. : "<<acno;
 cout<<"\nAccount Holder Name : ";
 cout<<name;
 cout<<"\nType of Account : "<<type;
 cout<<"\nBalance amount : "<<deposit;
}


void account::modify()
{
 cout<<"\nAccount No. : "<<acno;
 cout<<"\nModify Account Holder Name : ";
 cin.ignore();
 cin.getline(name,50);
 cout<<"\nModify Type of Account : ";
 cin>>type;
 type=toupper(type);
 cout<<"\nModify Balance amount : ";
 cin>>deposit;
}


void account::dep(int x)
{
 deposit+=x;
}

void account::draw(int x)
{
 deposit-=x;
}

void account::report() const
{
 cout<<acno<<setw(10)<<" "<<name<<setw(10)<<" "<<type<<setw(6)<<deposit<<endl;
}


int account::retacno() const
{
 return acno;
}

int account::retdeposit() const
{
 return deposit;
}

char account::rettype() const
{
 return type;
}
void write_account(); 
void display_sp(int); 
void modify_account(int); 
void delete_account(int); 
void display_all();  
void deposit_withdraw(int, int); 
void intro(); 


int main()
{
 char ch;
 int num;
 intro();
 do
 {
  system("cls");
  cout<<"\n\n\n\tMAIN MENU";
  cout<<"\n\n\t01. NEW ACCOUNT";
  cout<<"\n\n\t02. DEPOSIT AMOUNT";
  cout<<"\n\n\t03. WITHDRAW AMOUNT";
  cout<<"\n\n\t04. BALANCE ENQUIRY";
  cout<<"\n\n\t05. ALL ACCOUNT HOLDER LIST";
  cout<<"\n\n\t06. CLOSE AN ACCOUNT";
  cout<<"\n\n\t07. MODIFY AN ACCOUNT";
  cout<<"\n\n\t08. EXIT";
  cout<<"\n\n\tSelect Your Option (1-8) ";
  cin>>ch;
  system("cls");
  switch(ch)
  {
  case '1':
   write_account();
   break;
  case '2':
   cout<<"\n\n\tEnter The account No. : "; cin>>num;
   deposit_withdraw(num, 1);
   break;
  case '3':
   cout<<"\n\n\tEnter The account No. : "; cin>>num;
   deposit_withdraw(num, 2);
   break;
  case '4': 
   cout<<"\n\n\tEnter The account No. : "; cin>>num;
   display_sp(num);
   break;
  case '5':
   display_all();
   break;
  case '6':
   cout<<"\n\n\tEnter The account No. : "; cin>>num;
   delete_account(num);
   break;
   case '7':
   cout<<"\n\n\tEnter The account No. : "; cin>>num;
   modify_account(num);
   break;
   case '8':
   cout<<"\n\n\tThanks for using bank managemnt system";
   break;
   default :cout<<"\a";
  }
  cin.ignore();
  cin.get();
 }while(ch!='8');
 return 0;
}
void write_account()
{
 account ac;
 ofstream outFile;
 outFile.open("account.dat",ios::binary|ios::app);
 ac.create_account();
 outFile.write(reinterpret_cast<char *> (&ac), sizeof(account));
 outFile.close();
}

void display_sp(int n)
{
 account ac;
 bool flag=false;
 ifstream inFile;
 inFile.open("account.dat",ios::binary);
 if(!inFile)
 {
  cout<<"File could not be open !! Press any Key...";
  return;
 }
 cout<<"\nBALANCE DETAILS\n";

     while(inFile.read(reinterpret_cast<char *> (&ac), sizeof(account)))
 {
  if(ac.retacno()==n)
  {
   ac.show_account();
   flag=true;
  }
 }
 inFile.close();
 if(flag==false)
  cout<<"\n\nAccount number does not exist";
}

void modify_account(int n)
{
 bool found=false;
 account ac;
 fstream File;
 File.open("account.dat",ios::binary|ios::in|ios::out);
 if(!File)
 {
  cout<<"File could not be open !! Press any Key...";
  return;
 }
 while(!File.eof() && found==false)
 {
  File.read(reinterpret_cast<char *> (&ac), sizeof(account));
  if(ac.retacno()==n)
  {
   ac.show_account();
   cout<<"\n\nEnter The New Details of account"<<endl;
   ac.modify();
   int pos=(-1)*static_cast<int>(sizeof(account));
   File.seekp(pos,ios::cur);
   File.write(reinterpret_cast<char *> (&ac), sizeof(account));
   cout<<"\n\n\t Record Updated";
   found=true;
    }
 }
 File.close();
 if(found==false)
  cout<<"\n\n Record Not Found ";
}

void delete_account(int n)
{
 account ac;
 ifstream inFile;
 ofstream outFile;
 inFile.open("account.dat",ios::binary);
 if(!inFile)
 {
  cout<<"File could not be open !! Press any Key...";
  return;
 }
 outFile.open("Temp.dat",ios::binary);
 inFile.seekg(0,ios::beg);
 while(inFile.read(reinterpret_cast<char *> (&ac), sizeof(account)))
 {
  if(ac.retacno()!=n)
  {
   outFile.write(reinterpret_cast<char *> (&ac), sizeof(account));
  }
 }
 inFile.close();
 outFile.close();
 remove("account.dat");
 rename("Temp.dat","account.dat");
 cout<<"\n\n\tRecord Deleted ..";
}

void display_all()
{
 account ac;
 ifstream inFile;
 inFile.open("account.dat",ios::binary);
 if(!inFile)
 {
  cout<<"File could not be open !! Press any Key...";
  return;
 }
 cout<<"\n\n\t\tACCOUNT HOLDER LIST\n\n";
 cout<<"====================================================\n";
 cout<<"A/c no.      NAME           Type  Balance\n";
 cout<<"====================================================\n";
 while(inFile.read(reinterpret_cast<char *> (&ac), sizeof(account)))
 {
  ac.report();
 }
 inFile.close();
}

void deposit_withdraw(int n, int option)
{
 int amt;
 bool found=false;
 account ac;
 fstream File;
 File.open("account.dat", ios::binary|ios::in|ios::out);
 if(!File)
 {
  cout<<"File could not be open !! Press any Key...";
  return;
 }
 while(!File.eof() && found==false)
 {
  File.read(reinterpret_cast<char *> (&ac), sizeof(account));
  if(ac.retacno()==n)
  {
   ac.show_account();
   if(option==1)
   {
    cout<<"\n\n\tTO DEPOSITE AMOUNT ";
    cout<<"\n\nEnter The amount to be deposited";
    cin>>amt;
    ac.dep(amt);
   }
   if(option==2)
   {
    cout<<"\n\n\tTO WITHDRAW AMOUNT ";
    cout<<"\n\nEnter The amount to be withdraw";
    cin>>amt;
    int bal=ac.retdeposit()-amt;
    if((bal<500 && ac.rettype()=='S') || (bal<1000 && ac.rettype()=='C'))
     cout<<"Insufficience balance";
    else
     ac.draw(amt);
   }
   int pos=(-1)*static_cast<int>(sizeof(ac));
   File.seekp(pos,ios::cur);
   File.write(reinterpret_cast<char *> (&ac), sizeof(account));
   cout<<"\n\n\t Record Updated";
   found=true;
        }
         }
 File.close();
 if(found==false)
  cout<<"\n\n Record Not Found ";
}
void intro()
{
 cout<<"\n\n\n\t  BANK";
 cout<<"\n\n\tMANAGEMENT";
 cout<<"\n\n\t  SYSTEM";
 cout<<"\n\n\n\nMADE BY : your name";
 cout<<"\n\nSCHOOL : your school name";
 cin.get();
}