C++ Project – Bank Management System using File Part – 1

Program 1

// Bank Application Project with File Storage
#include<iostream>
#include<fstream>   // For file handling
using namespace std;

class Bank 
{
private:
    int accno;
    string name;
    int balance;

public:
    Bank() 
    {
        balance = 0;
    }

    void create_account();
    void deposit_amount();
    void withd_amount();
    void display();
    void writeToFile(); // New method to save data to file
};

void Bank::create_account()
 {
    cout << "\nEnter account no: ";
    cin >> accno;
    cout << "Enter name: ";
    cin >> name;
    writeToFile(); // save to file immediately
}

void Bank::deposit_amount() 
{
    int amt;
    cout << "\nEnter amount for deposit: ";
    cin >> amt;
    balance += amt;
    cout << "\nCurrent balance is: " << balance;
    writeToFile();
}

void Bank::withd_amount() 
{
    int amt;
    cout << "\nEnter amount for withdrawal: ";
    cin >> amt;

    if (amt > balance)
        cout << "\nInsufficient balance";
    else {
        balance -= amt;
        cout << "\nCurrent balance is: " << balance;
        writeToFile();
    }
}

void Bank::display() 
{
    cout << "\nAccount No: " << accno;
    cout << "\nName: " << name;
    cout << "\nCurrent balance is: " << balance;
}

// Save account details to file
void Bank::writeToFile() 
{
    ofstream fout("G://cppdata//BankData.txt", ios::app); // append mode
    if (fout.is_open()) 
    {
        fout << "Account No: " << accno << "\n";
        fout << "Name: " << name << "\n";
        fout << "Balance: " << balance << "\n";
        fout << "--------------------------\n";
        fout.close();
    } 
    else 
    {
        cout << "\n Error opening file for writing.";
    }
}

int main() 
{
    system("cls");
    int choice;
    Bank B1;

    do {
        cout << "\n--------- SBI Bank Application ---------";
        cout << "\n1. Create Account";
        cout << "\n2. Deposit Amount";
        cout << "\n3. Withdrawal Amount";
        cout << "\n4. Display";
        cout << "\n5. Exit";
        cout << "\n----------------------------------------";
        cout << "\nEnter your choice: ";
        cin >> choice;

        switch (choice) 
        {
        case 1: B1.create_account(); break;
        case 2: B1.deposit_amount(); break;
        case 3: B1.withd_amount(); break;
        case 4: B1.display(); break;
        case 5: cout << "\nExiting program...\n"; break;
        default: cout << "\nInvalid choice"; break;
        }

    } while (choice != 5);

    return 0;
}