C++ Project – Parking Lot Management System

Program 1

//Parking Lot Management System 
#include <iostream>
using namespace std;

class ParkingLot 
{
private:
    int twoWheelerCount;
    int fourWheelerCount;
    const int maxTwoWheelers;
    const int maxFourWheelers;

public:
    // Constructor to initialize
    ParkingLot(int max2W, int max4W)   // 5  3
        : maxTwoWheelers(max2W), maxFourWheelers(max4W) {
        twoWheelerCount = 0;
        fourWheelerCount = 0;
    }

    void parkVehicle(int type)    //2
     {
        if (type == 2) {
            if (twoWheelerCount < maxTwoWheelers) {
                twoWheelerCount++;
                cout << " 2-wheeler parked successfully.\n";
            } else {
                cout << " No space for 2-wheelers.\n";
            }
        } else if (type == 4) {
            if (fourWheelerCount < maxFourWheelers) {
                fourWheelerCount++;
                cout << " 4-wheeler parked successfully.\n";
            } else {
                cout << " No space for 4-wheelers.\n";
            }
        } else {
            cout << " Invalid vehicle type.\n";
        }
    }

    void removeVehicle(int type) {
        if (type == 2) {
            if (twoWheelerCount > 0) {
                twoWheelerCount--;
                cout << " 2-wheeler exited successfully.\n";
            } else {
                cout << " No 2-wheeler is parked.\n";
            }
        } else if (type == 4) {
            if (fourWheelerCount > 0) {
                fourWheelerCount--;
                cout << " 4-wheeler exited successfully.\n";
            } else {
                cout << " No 4-wheeler is parked.\n";
            }
        } else {
            cout << " Invalid vehicle type.\n";
        }
    }

    void showStatus() {
        cout << "\n Parking Lot Status:";
        cout << "\n---------------------------";
        cout << "\n2-Wheelers Parked: " << twoWheelerCount << "/" << maxTwoWheelers;
        cout << "\n4-Wheelers Parked: " << fourWheelerCount << "/" << maxFourWheelers;
        cout << "\nTotal Vehicles: " << (twoWheelerCount + fourWheelerCount);
        cout << "\n---------------------------\n";
    }
};

int main() {
    system("cls");
    int b,c;
    cout<<"\n Enter capacity of Bikes: ";
    cin>>b;
    cout<<"\n Enter capacity of Cars: ";
    cin>>c;    
    ParkingLot lot(b, c); // capacity: b bikes, c cars
    int choice, type;

    do {
        cout << "\n====== Parking Lot Menu ======";
        cout << "\n1. Park Vehicle";
        cout << "\n2. Remove Vehicle";
        cout << "\n3. Show Parking Status";
        cout << "\n4. Exit";
        cout << "\nEnter your choice: ";
        cin >> choice;

        switch (choice) {
        case 1:
            cout << "\nEnter Vehicle Type (2 for Bike, 4 for Car): ";
            cin >> type;
            lot.parkVehicle(type);
            break;

        case 2:
            cout << "\nEnter Vehicle Type to Remove (2 for Bike, 4 for Car): ";
            cin >> type;
            lot.removeVehicle(type);
            break;

        case 3:
            lot.showStatus();
            break;

        case 4:
            cout << "\nThank you! Exiting...\n";
            break;

        default:
            cout << " Invalid choice. Try again.\n";
        }

    } while (choice != 4);

    return 0;
}