File Handling(deleting) problem?

[zezima1993]

this works fine but when i go in option 6. Close An Account , it doesnt function well.
For example:

Created account number : S12345678

then if i go to 6. Close An Account, type in t123456678, or s00000000, the account number s12345678 will be deleted also (as long as either the 'type' or 'acno' correct)... I keep looking through the codes but cant find the mistake?? Can anyone kindly point it out if you find it? Thanks!!~

 //***************************************************************
//                   HEADER FILE USED IN PROJECT
//****************************************************************

#include<iostream>
#include<stdio.h>
#include<fstream>
#include<cctype>
#include<iomanip>
using namespace std;

//***************************************************************
//                   CLASS USED IN PROJECT
//****************************************************************


class account
{
	int acno;
	char icnumber[50];
	char name[50];
	char date[50];
	long long int deposit;
	char type;
public:
	void create_account();	//function to get data from user
	void show_account() const;	//function to show some data on screen
	void show_account_full () const; //show full data
	void modify();	//function to add new data
	void dep(int);	//function to accept amount and add to balance amount
	void draw(int);	//function to accept amount and subtract from balance amount
	void report() const;	//function to show data in tabular format
	int retacno() const;	//function to return account number
	int retdeposit() const;	//function to return balance amount
	char rettype() const;	//function to return type of account
};         //class ends here

void account::create_account()
{
	
	cout<<"\nEnter Type of The account (S for Savings, C for Current and T for Trading) : ";
	cin>>type;
	type=toupper(type);
	cout<<"\nEnter The account No. (8 digits):";
	cin>>acno;	
	cout<<"\n\nEnter The Name of The account Holder : ";
	cin.ignore();
	cin.getline(name,50);
	cout<<"\n\nEnter the Identity Card Number of The account Holder (YYMMDD-BP-####) : \n";
	cin.getline(icnumber,50);
	cout<<"\n\nEnter the date DD-MM-YYYY: ";
	cin.getline(date,50);
	cout<<"\nEnter The Starting Balance of The account : ";
	cin>>deposit;
	cout<<"\n\n\nAccount Created..";
}

void account::show_account () const
{
	cout<<"\nAccount No. : "<<type;
	printf("%08d",acno);
	cout<<"\nAccount Holder Name : "<<name;
	
}
void account::show_account_full() const
{
	cout<<"\nAccount No. : "<<type;
	printf("%08d",acno);
	cout<<"\nDate Created : "<<date;
	cout<<"\nAccount Holder Name : "<<name;
	cout<<"\nIdentity Card Number : "<<icnumber;
	cout<<"\nType of Account : ";

	if (type == 'S')
		cout<<"Savings";
	else if (type == 'C')
		cout<<"Current";
	else
		cout<<"Trading";

	cout<<"\nBalance amount : "<<deposit;
}


void account::modify()
{
	cout<<"\nAccount No. : ";
	cin>>type>>acno;
	cout<<"\nModify Account Holder Name : ";
	cin.ignore();
	cin.getline(name,50);
	cout<<"\nModify Identity Card Number : ";
	cin.getline(icnumber,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<<type;
	printf("%08d",acno);
	cout<<"  ";
	cout<<left<<setw(30)<<setfill(' ')<<name;
	cout<<left<<setw(18)<<setfill(' ')<<icnumber;
	cout<<left<<setw(25)<<setfill(' ')<<deposit<<endl;
}

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

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

char account::rettype() const
{
	return type;
}


//***************************************************************
//    	function declaration
//****************************************************************
void write_account();	//function to write record in binary file
void display_sp(char,int);	//function to display account details given by user
void modify_account(char,int);	//function to modify record of file
void delete_account(char,int);	//function to delete record of file
void display_all();		//function to display all account details
void deposit_withdraw(char,int, int); // function to desposit/withdraw amount for given account
void intro();	//introductory screen function

//***************************************************************
//    	THE MAIN FUNCTION OF PROGRAM
//****************************************************************


int main()
{
	char menu;
	char type;
	int num;
	intro();
	do
	{
		system("cls");
		cout<<"\n\n\n\tMAIN MENU";
		cout<<"\n\n\t1. NEW ACCOUNT";
		cout<<"\n\n\t2. MODIFY AN ACCOUNT";
		cout<<"\n\n\t3. DEPOSIT AMOUNT";
		cout<<"\n\n\t4. WITHDRAW AMOUNT";
		cout<<"\n\n\t5. ACCOUNT AND BALANCE ENQUIRY";
		cout<<"\n\n\t6. CLOSE AN ACCOUNT";
		cout<<"\n\n\t7. ALL ACCOUNT HOLDER LIST";
		cout<<"\n\n\t8.  cccc   ";
		cout<<"\n\n\t9.  zzzz   ";
		cout<<"\n\n\t0. EXIT";
		cout<<"\n\n\tSelect Your Option ";
		cin>>menu;
		system("cls");
		switch(menu)
		{
		case '1':
			write_account();
			break;
		case '2':
			cout<<"\n\n\tEnter The account No. : "; cin>>type>>num;
			type=toupper(type);
			modify_account(type,num);
			break;
		case '3':
			cout<<"\n\n\tEnter The account No. : "; cin>>type>>num;
			type=toupper(type);
			deposit_withdraw(type, num, 1);
			break;
		case '4': 
			cout<<"\n\n\tEnter The account No. : "; cin>>type>>num;
			type=toupper(type);
			deposit_withdraw(type, num, 2);
			break;
		case '5':
			cout<<"\n\n\tEnter The account No. : "; cin>>type>>num;
			type=toupper(type);
			display_sp(type,num);
			break;
		case '6':
			cout<<"\n\n\tEnter The account No. : "; cin>>type>>num;
			type=toupper(type);
			delete_account(type,num);
			break;
		 case '7':
			display_all();
			break;
		 case '8':

			 break;
		 case '9':

			 break;
		 case '0':
			cout<<"\n\n\tThanks for using bank managemnt system";
			break;
		 default :cout<<"\a";
		}
		cin.ignore();
		cin.get();
	}while(menu!='0');
	return 0;
}


//***************************************************************
//    	function to write in file
//****************************************************************

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();
}

[zezima1993]

//***************************************************************
//    	function to read specific record from file
//****************************************************************

void display_sp(char t,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.rettype()==t)
		{
			ac.show_account_full();
			flag=true;
		}
	}
	inFile.close();
	if(flag==false)
		cout<<"\n\nAccount number does not exist";
}


//***************************************************************
//    	function to modify record of file
//****************************************************************

void modify_account(char t,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.rettype()==t)
		{
			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 ";
}

//***************************************************************
//    	function to delete record of file
//****************************************************************


void delete_account(char t,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 && ac.rettype () != t)
		{
			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 ..";
}

//***************************************************************
//    	function to display all accounts deposit list
//****************************************************************

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                          IC Number         Balance   \n";
	cout<<"================================================================================\n";
	while(inFile.read(reinterpret_cast<char *> (&ac), sizeof(account)))
	{
		ac.report();
	}
	inFile.close();
}

//***************************************************************
//    	function to deposit and withdraw amounts
//****************************************************************

void deposit_withdraw(char t, 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.rettype()==t)
		{
			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 ";
}


//***************************************************************
//    	INTRODUCTION FUNCTION
//****************************************************************


void intro()
{
	cout<<"\n\n\n\t   WELCOME";
	cout<<"\n\n\t     TO";
	cout<<"\n\n\tBANK MANAGEMENT SYSTEM";
	cout<<"\n\n\n\nMADE BY : PUNG KAH HENG, CHAN KIM HAO, NG WAN YEE\n\n";
	system("pause");
}

//***************************************************************
//    			END OF PROJECT
//***************************************************************