app.cpp

#include <iostream>
#include <string>
#include <cstdlib>  // For rand()
#include <ctime>    // 
#include <iostream>
#include <string>

using namespace std;

string email, username, password, confirmPassword;

void signUp() {
    cout << "Enter Email address: ";
    cin >> email;
    
    cout << "Enter Password: ";
    cin >> password;
    
    cout << "Enter Confirm Password: ";
    cin >> confirmPassword;
    
    if (password == confirmPassword) {
        cout << "Enter a username: ";
        cin >> username;
        cout << "Account created successfully!\n";
    } else {
        cout << "Passwords do not match! Try again.\n";
        signUp();  // Recursive call for retry
    }
}
#include <cstdlib>  // For rand()
#include <ctime>    // For time()

void login() {
    string inputUsername, inputPassword;
    int otp, enteredOTP;

    cout << "Enter your username: ";
    cin >> inputUsername;
    
    cout << "Enter your password: ";
    cin >> inputPassword;

    if (inputUsername == username && inputPassword == password) {
        srand(time(0));  // Seed for random OTP
        otp = rand() % 9000 + 1000; // Generates a 4-digit OTP
        cout << "Your OTP is: " << otp << endl;
        
        cout << "Enter OTP to verify: ";
        cin >> enteredOTP;

        if (enteredOTP == otp) {
            cout << "Access Granted! Welcome to your account.\n";
        } else {
            cout << "Incorrect OTP. Try again.\n";
            login();  // Retry login
        }
    } else {
        cout << "Invalid credentials! Try again.\n";
        login();
    }
}
void bookRide() {
    string pickup, destination;
    int vehicleType, distance, fare;
    
    cout << "Enter your Pickup Location: ";
    cin >> pickup;
    
    cout << "Enter your Destination: ";
    cin >> destination;

    cout << "Select Vehicle Type:\n";
    cout << "1. Car (Rs. 20/km)\n";
    cout << "2. Bike (Rs. 10/km)\n";
    cout << "3. Auto (Rs. 15/km)\n";
    cout << "Enter your choice (1-3): ";
    cin >> vehicleType;

    cout << "Enter estimated distance (in km): ";
    cin >> distance;

    switch (vehicleType) {
        case 1: fare = distance * 20; break;
        case 2: fare = distance * 10; break;
        case 3: fare = distance * 15; break;
        default: cout << "Invalid choice! Try again.\n"; bookRide(); return;
    }

    cout << "Estimated Fare: Rs. " << fare << endl;

    char confirm;
    cout << "Confirm Ride? (Y/N): ";
    cin >> confirm;

    if (confirm == 'Y' || confirm == 'y') {
        cout << "Finding your driver...\n";
        cout << "Ride Confirmed! Your driver is on the way.\n";
    } else {
        cout << "Ride cancelled.\n";
    }
}
int main() {
    int choice;
    
    cout << "Welcome to Online Ride-Booking App\n";
    cout << "1. Sign-Up\n2. Login\n";
    cin >> choice;
    
    if (choice == 1) {
        signUp();
        login();  // After sign-up, login immediately
    } else if (choice == 2) {
        login();
    } else {
        cout << "Invalid choice!\n";
        return 0;
    }

    bookRide();  // Start ride-booking after login
    return 0;
}