atm

INSTALLATION

Install a C++ compiler, such as GCC or Clang. Download the ATM machine program code. Open a terminal window and navigate to the directory where you downloaded the code. Type the following command to compile the code: g++ -o atm atm.cpp Type the following command to run the program: ./atm The program will prompt you to enter your PIN. If the PIN is valid, you will be able to use the ATM machine to check your balance, withdraw money, or transfer money.

EXPLANATION

The program starts by including the following header files:

#include #include #include #include #include #include Use code with caution. Learn more These header files provide the following functionalities:

iostream: Input/output stream string: String manipulation vector: Dynamic array ctime: Time manipulation fstream: File stream iomanip: Formatted output The next part of the program defines the following functions:

void clear(); string get_current_date_time(); int get_pin(); bool check_pin(int pin, vector pins); void print_welcome_message(); void print_menu(); void check_balance(); void withdraw(); void transfer(); void log_transaction(string transaction_type);

These functions are used to:

Clear the screen Get the current date and time Get the PIN from the user Check the PIN against a list of valid PINs Print the welcome message Print the menu of options Perform the check balance operation Perform the withdraw operation Perform the transfer operation Log the transaction The main function of the program is as follows:

int main() { // Clear the screen clear();

// Get the current date and time
string current_date_time = get_current_date_time();

// Print the welcome message
print_welcome_message();

// Get the PIN from the user
int pin = get_pin();

// Check the PIN against the list of valid PINs
vector<int> pins = {1234, 1122, 1133, 1803, 1672, 1110, 1111};
bool is_valid_pin = check_pin(pin, pins);

// If the PIN is valid, continue
if (is_valid_pin) {
    // Print the menu of options
    print_menu();

    // Get the user's choice
    int choice;
    cout << "Enter your choice: ";
    cin >> choice;

    // Switch on the user's choice
    switch (choice) {
        case 1:
            check_balance();
            break;
        case 2:
            withdraw();
            break;
        case 3:
            transfer();
            break;
        case 4:
            cout << "Exiting..." << endl;
            break;
        default:
            cout << "Invalid choice!" << endl;
            break;
    }
} else {
    cout << "Invalid PIN!" << endl;
}

return 0;

}

This function first clears the screen, then gets the current date and time. It then prints the welcome message and gets the PIN from the user. The PIN is then checked against a list of valid PINs. If the PIN is valid, the menu of options is printed and the user is prompted to enter their choice. The program then switches on the user's choice and calls the appropriate function. If the PIN is invalid, the Invalid PIN! message is displayed.