Banking Project.cc

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <vector>
#include <map>

using namespace std;
#define MIN_BALANCE 500







class InsufficientFunds {};





class Account {




private:

    long accountNumber;

    string firstName;

    string lastName;
    float balance;

    static long NextAccountNumber;

public:
    Account() {}

    Account(string fname, string lname, float balance);

    long getAccNo() { 
        return accountNumber;
         }
    string getFirstName() {
         return firstName;
          }
    string getLastName() {
         return lastName; }
    float getBalance() { 
        return balance; 
        }





    void Deposit(float amount);



    void Withdraw(float amount);


    static void setLastAccountNumber(long accountNumber);

    static long getLastAccountNumber();

    friend ofstream& operator<<(ofstream& ofs, Account& acc);

    friend ifstream& operator>>(ifstream& ifs, Account& acc);

    friend ostream& operator<<(ostream& os, Account& acc);
};


long Account::NextAccountNumber = 0;


class Bank {


private:

    map<long, Account> accounts;

public:


    Bank();

    Account OpenAccount(string fname, string lname, float balance);


    Account BalanceEnquiry(long accountNumber);

    Account Deposit(long accountNumber, float amount);

    Account Withdraw(long accountNumber, float amount);

    void CloseAccount(long accountNumber);
    void ShowAllAccounts();

    ~Bank();
};

int main() {
    Bank b;

    Account acc;

    int choice;

    string fname, lname;

    long accountNumber;

    float balance;

    float amount;

                   cout << "***Banking System***" << endl;

    do {
          cout << "\n\tSelect one option below ";
         cout << "\n\t1 Open an Account";
         cout << "\n\t2 Balance Enquiry";
             cout << "\n\t3 Deposit";
               cout << "\n\t4 Withdrawal";
          cout << "\n\t5 Close an Account";
         cout << "\n\t6 Show All Accounts";
        cout << "\n\t7 Quit";
         cout << "\nEnter your choice: ";
        cin >> choice;

switch (choice) {
    case 1:
                cout << "Enter First Name: ";
                cin >> fname;
                cout << "Enter Last Name: ";
                cin >> lname;
                cout << "Enter initial Balance: ";
                cin >> balance;
                acc = b.OpenAccount(fname, lname, balance);
                cout << endl << "Congratulations! Account is Created" << endl;
                cout << acc;
                break;
   case 2:
                cout << "Enter Account Number: ";
                cin >> accountNumber;
                acc = b.BalanceEnquiry(accountNumber);
                cout << endl << "Your Account Details" << endl;
                cout << acc;
                break;
        case 3:
                cout << "Enter Account Number: ";
                cin >> accountNumber;
                cout << "Enter Balance: ";
                cin >> amount;
                acc = b.Deposit(accountNumber, amount);
                cout << endl << "Amount is Deposited" << endl;
                cout << acc;
                break;
      case 4:
                cout << "Enter Account Number: ";
                cin >> accountNumber;
                cout << "Enter Balance: ";
                cin >> amount;
                acc = b.Withdraw(accountNumber, amount);
                cout << endl << "Amount Withdrawn" << endl;
                cout << acc;
                break;
    case 5:
                cout << "Enter Account Number: ";
                cin >> accountNumber;
                b.CloseAccount(accountNumber);
                cout << endl << "Account is Closed" << endl;
                cout << acc;
                break;
       case 6:
                b.ShowAllAccounts();
                break;
       case 7:
                break;
            default:
                cout << "\nEnter correct choice";
                exit(0);
        }
    } while (choice != 7);

    return 0;
}

Account::Account(string fname, string lname, float balance) {


    NextAccountNumber++;

    accountNumber = NextAccountNumber;

    firstName = fname;
    lastName = lname;

    this->balance = balance;
}

void Account::Deposit(float amount) {

    balance += amount;
}

void Account::Withdraw(float amount) {

    if (balance - amount < MIN_BALANCE)

        throw InsufficientFunds();

    balance -= amount;

}

void Account::setLastAccountNumber(long accountNumber) {

    NextAccountNumber = accountNumber;
}


long Account::getLastAccountNumber() {

    return NextAccountNumber;
}

ofstream& operator<<(ofstream& ofs, Account& acc) {

    ofs << acc.accountNumber << endl;

    ofs << acc.firstName << endl;

    ofs << acc.lastName << endl;

    ofs << acc.balance << endl;
    return ofs;
}

ifstream& operator>>(ifstream& ifs, Account& acc) {
    ifs >> acc.accountNumber;

    ifs >> acc.firstName;

    ifs >> acc.lastName;

    ifs >> acc.balance;
    return ifs;
}

ostream& operator<<(ostream& os, Account& acc) {

    os << "First Name: " << acc.getFirstName() << endl;

    os << "Last Name: " << acc.getLastName() << endl;

    os << "Account Number: " << acc.getAccNo() << endl;
    os << "Balance: " << acc.getBalance() << endl;
    return os;
}





Bank::Bank() {

    Account account;

    ifstream infile;

    infile.open("Bank.data");


    if (!infile) {
        return;
    }

    while (!infile.eof()) {

        infile >> account;
        accounts.insert(pair<long, Account>(account.getAccNo(), account));
    }

    Account::setLastAccountNumber(account.getAccNo());
    infile.close();
}

Account Bank::OpenAccount ( string fname, string lname, float balance) {
     ofstream outfile;
      Account account(fname, lname, balance);
     accounts.insert  ( pair<long, Account>(account.getAccNo(), account));

    outfile.open("Bank.data", ios::trunc);

    map<long, Account>::iterator itr;

    for (itr = accounts.begin(); itr != accounts.end(); itr++) {
        outfile << itr->second;
    }


    outfile.close();

    return account;
}


        Account Bank::BalanceEnquiry(long accountNumber) {


    map<long, Account>::iterator itr = accounts.find(accountNumber);

    return itr->second;


}

Account Bank::Deposit(long accountNumber, float amount) {


    map<long, Account>::iterator itr = accounts.find(accountNumber);
    itr->second.Deposit(amount);
    return itr->second;


}

Account Bank::Withdraw(long accountNumber, float amount) {


    map<long, Account>::iterator itr = accounts.find(accountNumber);
    
    itr->second.Withdraw(amount);
   
    return itr->second;


}

void Bank::CloseAccount(long accountNumber) {

   
    map<long, Account>::iterator itr = accounts.find(accountNumber);
   
    cout << "Account Deleted: " << itr->second;
   
    accounts.erase(accountNumber);

}

void Bank::ShowAllAccounts() {


    map<long, Account>::iterator itr;

    for (itr = accounts.begin(); itr != accounts.end(); itr++) {

        cout << "Account " << itr->first << endl << itr->second << endl;

    }
}









Bank::~Bank() {


    ofstream outfile;

    outfile.open("Bank.data", ios::trunc);



    map<long, Account>::iterator itr;

    for (itr = accounts.begin(); itr != accounts.end(); itr++) {

                outfile << itr->second;

    }


        outfile.close();
}