source.cpp

#include<iostream>
#include<fstream>
#include<cctype>
#include<iomanip>
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()
{
	system("clear");
	cout << "\n\t\t\tEnter the Account No. : ";
	cin >> acno;
	cout << "\n\n\t\t\tPlease Enter the Name of the Account holder Here : ";
	cin.ignore();
	cin.getline(name, 50);
	cout << "\n\t\t\tEnter Type of the Account (C/S) : ";
	cin >> type;
	type = toupper(type);
	cout << "\n\t\t\tEnter The Initial amount : ";
	cin >> deposit;
	cout << "\n\n\t\t\tAccount Created..";
}

void account::show_account() const
{
	cout << "\n\t\t\tAccount No. : " << acno;
	cout << "\n\t\t\tAccount Holder Name : ";
	cout << name;
	cout << "\n\t\t\tType of Account : " << type;
	cout << "\n\t\t\tBalance amount : " << deposit;
}


void account::modify()
{
	cout << "\n\t\t\tAccount No. : " << acno;
	cout << "\n\t\t\tModify Account Holder Name : ";
	cin.ignore();
	cin.getline(name, 50);
	cout << "\n\t\t\tModify Type of Account : ";
	cin >> type;
	type = toupper(type);
	cout << "\n\t\t\tModify 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);

int main()
{
	char ch;
	int num;
	do
	{
		system("CLS");
		cout << "\n\n\t\t\t\t======================\n";
		cout << "\t\t\t\tBANK MANAGEMENT SYSTEM";
		cout << "\n\t\t\t\t======================\n";

		cout << "\t\t\t\t    ::MAIN MENU::\n";
		cout << "\n\t\t\t\t1. NEW ACCOUNT";
		cout << "\n\t\t\t\t2. DEPOSIT AMOUNT";
		cout << "\n\t\t\t\t3. WITHDRAW AMOUNT";
		cout << "\n\t\t\t\t4. BALANCE ENQUIRY";
		cout << "\n\t\t\t\t5. ALL ACCOUNT HOLDER LIST";
		cout << "\n\t\t\t\t6. CLOSE AN ACCOUNT";
		cout << "\n\t\t\t\t7. MODIFY AN ACCOUNT";
		cout << "\n\t\t\t\t8. EXIT";
		cout << "\n\n\t\t\t\tSelect Your Option (1-8): ";
		cin >> ch;

		switch (ch)
		{
		case '1':
			write_account();
			break;
		case '2':
			system("CLS");
			cout << "\n\n\t\t\tEnter The account No. : "; cin >> num;
			deposit_withdraw(num, 1);
			break;
		case '3':
			system("CLS");
			cout << "\n\n\t\t\tEnter The account No. : "; cin >> num;
			deposit_withdraw(num, 2);
			break;
		case '4':
			system("CLS");
			cout << "\n\n\t\t\tEnter The account No. : "; cin >> num;
			display_sp(num);
			break;
		case '5':
			display_all();
			break;
		case '6':
			system("CLS");
			cout << "\n\n\t\t\tEnter The account No. : "; cin >> num;
			delete_account(num);
			break;
		case '7':
			system("CLS");
			cout << "\n\n\t\t\tEnter The account No. : "; cin >> num;
			modify_account(num);
			break;
		case '8':
			system("CLS");
			cout << "\n\n\t\t\tclearing screen";
			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 << "\n\t\t\tBALANCE 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\n\t\t\tAccount 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\n\t\t\tEnter The New Details of account" << endl;
			ac.modify();
			int pos = (-1) * static_cast<int>(sizeof(account));
			File.seekp(pos, ios::cur); //fncallat1353
			File.write(reinterpret_cast<char*> (&ac), sizeof(account));
			cout << "\n\n\t\t\tRecord Updated";
			found = true;
		}
	}
	File.close();
	if (found == false)
		cout << "\n\n\t\t\tRecord 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\nRecord Deleted ..";
}


void display_all()
{
	system("CLS");
	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\t\t\tTO DEPOSITSS AMOUNT";
				cout << "\n\n\t\t\tEnter The amount to be deposited: ";
				cin >> amt;
				ac.dep(amt);
			}
			if (option == 2)
			{
				cout << "\n\n\t\t\tTO WITHDRAW AMOUNT";
				cout << "\n\n\t\t\tEnter The amount to be withdraw: ";
				cin >> amt;
				int bal = ac.retdeposit() - amt;
				if (bal < 0)
					cout << "Insufficience balance";
				else
					ac.draw(amt);
			}
			int pos = (-1) * static_cast<int>(sizeof(ac));
			File.seekp(pos, ios::cur);//fn1353
			File.write(reinterpret_cast<char*> (&ac), sizeof(account));
			cout << "\n\n\t\t\tRecord Updated";
			found = true;
		}
	}
	File.close();
	if (found == false)
		cout << "\n\n\t\t\tRecord Not Found ";
}