CodeAlpha-Task-4.cpp

#include <iostream>
#include <string>
using namespace std;

class Transaction {

    string type;
    double amount;
    string description;

public:

    Transaction() {
        type = "";
        amount = 0;
        description = "";
    }

    Transaction(string type, double amount, string description) {
        this->type = type;
        this->amount = amount;
        this->description = description;
    }

    void display() {
        cout << "  Type        : " << type << endl;
        cout << "  Amount      : Rs. " << amount << endl;
        cout << "  Description : " << description << endl;
        cout << "  ----------------------------" << endl;
    }
};


class Account {

    int    accountNumber;
    double balance;

    Transaction history[100];
    int transactionCount;

    void recordTransaction(string type, double amount, string desc) {
        if (transactionCount < 100) {
            history[transactionCount] = Transaction(type, amount, desc);
            transactionCount++;
        }
        else {
            cout << "  [!] Transaction history full." << endl;
        }
    }

public:

    Account(int accountNumber, double openingBalance) {
        this->accountNumber = accountNumber;
        this->balance = openingBalance;
        this->transactionCount = 0;
        recordTransaction("deposit", openingBalance, "Account opened with Rs. " + to_string(openingBalance));
    }

    void deposit(double amount) {
        if (amount <= 0) {
            cout << "  [!] Deposit amount must be greater than 0." << endl;
            return;
        }
        balance += amount;
        recordTransaction("deposit", amount, "Deposited Rs. " + to_string(amount));
        cout << "  [✓] Rs. " << amount << " deposited successfully." << endl;
    }

    void withdraw(double amount) {
        if (amount <= 0) {
            cout << "  [!] Withdrawal amount must be greater than 0." << endl;
            return;
        }
        if (amount > balance) {
            cout << "  [!] Insufficient balance. Current balance: Rs. " << balance << endl;
            return;
        }
        balance -= amount;
        recordTransaction("withdrawal", amount, "Withdrew Rs. " + to_string(amount));
        cout << "  [✓] Rs. " << amount << " withdrawn successfully." << endl;
    }

    void transfer(double amount, Account& targetAccount) {
        if (amount <= 0) {
            cout << "  [!] Transfer amount must be greater than 0." << endl;
            return;
        }
        if (amount > balance) {
            cout << "  [!] Insufficient balance for transfer. Current balance: Rs. " << balance << endl;
            return;
        }
        balance -= amount;
        recordTransaction("transfer", amount,
            "Transferred Rs. " + to_string(amount) +
            " to Account #" + to_string(targetAccount.accountNumber));

        targetAccount.balance += amount;
        targetAccount.recordTransaction("transfer", amount,
            "Received Rs. " + to_string(amount) +
            " from Account #" + to_string(accountNumber));

        cout << "  [✓] Rs. " << amount << " transferred to Account #"
            << targetAccount.accountNumber << " successfully." << endl;
    }

    void showBalance() {
        cout << "  Account #" << accountNumber
            << "  |  Balance: Rs. " << balance << endl;
    }

    void showHistory() {
        cout << "  === Transaction History (Account #" << accountNumber << ") ===" << endl;
        if (transactionCount == 0) {
            cout << "  No transactions yet." << endl;
            return;
        }
        for (int i = 0; i < transactionCount; i++) {
            cout << "  [" << i + 1 << "]" << endl;
            history[i].display();
        }
    }

    int getAccountNumber() {
        return accountNumber;
    }
};


class Customer {

    string  name;
    int     customerID;
    Account account;

public:

    Customer(string name, int customerID, int accountNumber, double openingBalance)
        : account(accountNumber, openingBalance)
    {
        this->name = name;
        this->customerID = customerID;
    }

    void showInfo() {
        cout << "  Customer Name : " << name << endl;
        cout << "  Customer ID   : " << customerID << endl;
        account.showBalance();
    }

    Account& getAccount() {
        return account;
    }

    string getName() {
        return name;
    }
};


int main() {

    cout << "========================================" << endl;
    cout << "        WELCOME TO THE BANK             " << endl;
    cout << "========================================" << endl;

    Customer c1("Ali", 1001, 2001, 10000);
    Customer c2("Sara", 1002, 2002, 5000);

    cout << "\n--- Customer Profiles ---" << endl;
    c1.showInfo();
    cout << endl;
    c2.showInfo();

    cout << "\n--- Deposits ---" << endl;
    c1.getAccount().deposit(3000);
    c2.getAccount().deposit(1500);

    cout << "\n--- Withdrawals ---" << endl;
    c1.getAccount().withdraw(2000);
    c2.getAccount().withdraw(500);

    cout << "\n--- Failed Withdrawal Test ---" << endl;
    c2.getAccount().withdraw(99999);

    cout << "\n--- Fund Transfer ---" << endl;
    c1.getAccount().transfer(1000, c2.getAccount());

    cout << "\n--- Final Balances ---" << endl;
    c1.showInfo();
    cout << endl;
    c2.showInfo();

    cout << "\n--- " << c1.getName() << "'s Transaction History ---" << endl;
    c1.getAccount().showHistory();

    cout << "\n--- " << c2.getName() << "'s Transaction History ---" << endl;
    c2.getAccount().showHistory();

    cout << "\n========================================" << endl;
    cout << "           THANK YOU!                   " << endl;
    cout << "========================================" << endl;

    return 0;
}