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#include <iostream> #include <vector> #include <string> #include <iomanip> using namespace std; class Account { private: int accountNumber; string accountHolder; double balance; vector<string> transactionHistory; public: Account(int accNum, string accHolder, double initialBalance) : accountNumber(accNum), accountHolder(accHolder), balance(initialBalance) {} void deposit(double amount) { if (amount > 0) { balance += amount; transactionHistory.push_back("Deposited $" + to_string(amount)); } else { cout << "Invalid deposit amount." << endl; } } void withdraw(double amount) { if (amount > 0 && amount <= balance) { balance -= amount; transactionHistory.push_back("Withdrew $" + to_string(amount)); } else { cout << "Insufficient funds or invalid amount." << endl; } } void checkBalance() const { cout << fixed << setprecision(2); cout << "Balance: $" << balance << endl; } void showTransactionHistory() const { cout << "Transaction History:" << endl; for (const auto& transaction : transactionHistory) { cout << transaction << endl; } } int getAccountNumber() const { return accountNumber; } }; class Bank { private: vector<Account> accounts; public: void createAccount(int accNum, string accHolder, double initialBalance) { accounts.emplace_back(accNum, accHolder, initialBalance); cout << "Account created successfully!" << endl; } Account* findAccount(int accNum) { for (auto& account : accounts) { if (account.getAccountNumber() == accNum) { return &account; } } return nullptr; } void deposit(int accNum, double amount) { Account* account = findAccount(accNum); if (account) { account->deposit(amount); } else { cout << "Account not found." << endl; } } void withdraw(int accNum, double amount) { Account* account = findAccount(accNum); if (account) { account->withdraw(amount); } else { cout << "Account not found." << endl; } } void checkBalance(int accNum) const { const Account* account = findAccount(accNum); if (account) { account->checkBalance(); } else { cout << "Account not found." << endl; } } void showTransactionHistory(int accNum) const { const Account* account = findAccount(accNum); if (account) { account->showTransactionHistory(); } else { cout << "Account not found." << endl; } } }; int main() { Bank bank; int choice, accNum; string accHolder; double amount; do { cout << "\nBank Management System" << endl; cout << "1. Create Account" << endl; cout << "2. Deposit Money" << endl; cout << "3. Withdraw Money" << endl; cout << "4. Check Balance" << endl; cout << "5. View Transaction History" << endl; cout << "6. Exit" << endl; cout << "Enter your choice: "; cin >> choice; switch (choice) { case 1: cout << "Enter account number: "; cin >> accNum; cout << "Enter account holder name: "; cin.ignore(); // Ignore leftover newline character getline(cin, accHolder); cout << "Enter initial balance: $"; cin >> amount; bank.createAccount(accNum, accHolder, amount); break; case 2: cout << "Enter account number: "; cin >> accNum; cout << "Enter amount to deposit: $"; cin >> amount; bank.deposit(accNum, amount); break; case 3: cout << "Enter account number: "; cin >> accNum; cout << "Enter amount to withdraw: $"; cin >> amount; bank.withdraw(accNum, amount); break; case 4: cout << "Enter account number: "; cin >> accNum; bank.checkBalance(accNum); break; case 5: cout << "Enter account number: "; cin >> accNum; bank.showTransactionHistory(accNum); break; case 6: cout << "Exiting the system. Goodbye!" << endl; break; default: cout << "Invalid choice. Please select a valid option." << endl; break; } } while (choice != 6); return 0; } |
Explanation
- Include Libraries:
#include <iostream>: For input and output operations.#include <vector>: For using vectors to manage multiple accounts and transactions.#include <string>: For string operations.#include <iomanip>: For formatting output (e.g., setting decimal precision).
- Account Class:
- Private Data Members:
accountNumber: Unique identifier for the account.accountHolder: Name of the account holder.balance: Current balance of the account.transactionHistory: List of transaction descriptions.
- Public Methods:
deposit(double amount): Adds money to the balance and logs the transaction.withdraw(double amount): Removes money from the balance if sufficient funds are available and logs the transaction.checkBalance() const: Displays the current balance.showTransactionHistory() const: Displays all transactions.getAccountNumber() const: Returns the account number.
- Private Data Members:
- Bank Class:
- Private Data Member:
accounts: List of all accounts in the bank.
- Public Methods:
createAccount(int accNum, string accHolder, double initialBalance): Creates and adds a new account to the bank.findAccount(int accNum): Searches for an account by its number.deposit(int accNum, double amount): Deposits money into a specified account.withdraw(int accNum, double amount): Withdraws money from a specified account.checkBalance(int accNum) const: Displays the balance of a specified account.showTransactionHistory(int accNum) const: Displays the transaction history of a specified account.
- Private Data Member:
- Main Function (
main):- Provides a menu-driven interface to interact with the bank system.
- Handles user choices to create accounts, deposit, withdraw, check balances, and view transaction histories.
- Repeats the menu until the user chooses to exit.