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  1. #include <iostream>
  2. #include <string>
  3.  
  4. class BankAccount {
  5. private:
  6.     std::string accountHolder;
  7.     int accountNumber;
  8.     int pin;
  9.     double balance;
  10.  
  11. public:
  12.     // Constructor
  13.     BankAccount(std::string name, int accNum, int userPin, double initialBalance) 
  14.         : accountHolder(name), accountNumber(accNum), pin(userPin), balance(initialBalance) {}
  15.  
  16.     // Verify PIN
  17.     bool authenticate(int inputPin) const {
  18.         return pin == inputPin;
  19.     }
  20.  
  21.     // Getters
  22.     double getBalance() const {
  23.         return balance;
  24.     }
  25.  
  26.     std::string getAccountHolder() const {
  27.         return accountHolder;
  28.     }
  29.  
  30.     // Account Actions
  31.     void deposit(double amount) {
  32.         if (amount > 0) {
  33.             balance += amount;
  34.             std::cout << "\nSuccessfully deposited $" << amount << "\n";
  35.             std::cout << "New Balance: $" << balance << "\n";
  36.         } else {
  37.             std::cout << "\nInvalid deposit amount.\n";
  38.         }
  39.     }
  40.  
  41.     bool withdraw(double amount) {
  42.         if (amount <= 0) {
  43.             std::cout << "\nInvalid withdrawal amount.\n";
  44.             return false;
  45.         }
  46.         if (amount > balance) {
  47.             std::cout << "\nInsufficient funds! Current Balance: $" << balance << "\n";
  48.             return false;
  49.         }
  50.         balance -= amount;
  51.         std::cout << "\nPlease collect your cash: $" << amount << "\n";
  52.         std::cout << "Remaining Balance: $" << balance << "\n";
  53.         return true;
  54.     }
  55. };
  56.  
  57. int main() {
  58.     // Default account setup (Holder, Account No, PIN, Starting Balance)
  59.     BankAccount userAccount("Alex Morgan", 100234, 1234, 500.00);
  60.  
  61.     int enteredPin;
  62.     int attempts = 0;
  63.     bool authenticated = false;
  64.  
  65.     std::cout << "====================================\n";
  66.     std::cout << "       WELCOME TO MINI ATM          \n";
  67.     std::cout << "====================================\n";
  68.  
  69.     // PIN Authentication Loop (Max 3 Attempts)
  70.     while (attempts < 3) {
  71.         std::cout << "Enter your 4-digit PIN: ";
  72.         std::cin >> enteredPin;
  73.  
  74.         if (userAccount.authenticate(enteredPin)) {
  75.             authenticated = true;
  76.             break;
  77.         } else {
  78.             attempts++;
  79.             std::cout << "Incorrect PIN. Attempts left: " << (3 - attempts) << "\n\n";
  80.         }
  81.     }
  82.  
  83.     if (!authenticated) {
  84.         std::cout << "Card locked due to multiple incorrect attempts. Exiting...\n";
  85.         return 0;
  86.     }
  87.  
  88.     // ATM Main Menu
  89.     int choice;
  90.     do {
  91.         std::cout << "\n------------------------------------\n";
  92.         std::cout << "Welcome, " << userAccount.getAccountHolder() << "!\n";
  93.         std::cout << "1. Check Balance\n";
  94.         std::cout << "2. Deposit Money\n";
  95.         std::cout << "3. Withdraw Money\n";
  96.         std::cout << "4. Exit\n";
  97.         std::cout << "Choose an option (1-4): ";
  98.         std::cin >> choice;
  99.  
  100.         switch (choice) {
  101.             case 1:
  102.                 std::cout << "\nYour Current Balance: $" << userAccount.getBalance() << "\n";
  103.                 break;
  104.  
  105.             case 2: {
  106.                 double depositAmount;
  107.                 std::cout << "Enter amount to deposit: $";
  108.                 std::cin >> depositAmount;
  109.                 userAccount.deposit(depositAmount);
  110.                 break;
  111.             }
  112.  
  113.             case 3: {
  114.                 double withdrawAmount;
  115.                 std::cout << "Enter amount to withdraw: $";
  116.                 std::cin >> withdrawAmount;
  117.                 userAccount.withdraw(withdrawAmount);
  118.                 break;
  119.             }
  120.  
  121.             case 4:
  122.                 std::cout << "\nThank you for using Mini ATM. Goodbye!\n";
  123.                 break;
  124.  
  125.             default:
  126.                 std::cout << "\nInvalid choice. Please pick between 1 and 4.\n";
  127.         }
  128.     } while (choice != 4);
  129.  
  130.     return 0;
  131. }
Success #stdin #stdout 0.01s 5284KB
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stdin
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Standard input is empty
stdout
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====================================
       WELCOME TO MINI ATM          
====================================
Enter your 4-digit PIN: Incorrect PIN. Attempts left: 2

Enter your 4-digit PIN: Incorrect PIN. Attempts left: 1

Enter your 4-digit PIN: Incorrect PIN. Attempts left: 0

Card locked due to multiple incorrect attempts. Exiting...
https://ideone.com/N4V8hd
language:
C++ (gcc 8.3)
created:
3 hours ago
visibility:
public

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