#include <iostream>
void Menu();
void seatAvailability();
void seatBooking();
void freeSeat();
void grossProfit();
void changeOption();

int ticket_no,type,free_seats,f_ticket, amount, a_count;
const int half = 5000;
const int full = 10000;
int available_seats =20;
int tickets[20][2];
using namespace std;

int main()
{
    Menu();

return 0;
}


void Menu(){
//Menu
    cout <<"Movie Theatre System" << endl
    <<" ||     WELCOME         ||" << endl
    <<" *************************  " << endl << endl
    <<" MAIN MENU: " << endl
    <<"1--> View seats" << endl
    <<"2--> Book seats" << endl
    <<"3--> Free up seats" << endl
    <<"4--> Gross Profit" << endl
    <<"5--> Change Option" << endl
    <<"6--> Quit" << endl;

    //Selection
    int option;

    do{


        cout << endl << "Please select an option: ";

        cin >> option;

        switch (option)
        {

        case 1:

            seatAvailability();
            break;

        case 2:

            seatBooking();
            break;

        case 3:

            freeSeat();
            break;

        case 4:

            grossProfit();
            break;

        case 5:

            changeOption();
            break;

        case 6:

            cout << "Out of range" << endl;
            break;

        default:

            cout <<"Please choose a valid option:" << endl
                << "=============================" << endl;
            cin.ignore();

        }
        Menu();
    }
    while (option != 6);

}

void seatAvailability(){

    cout <<"Available seats " << available_seats << endl;
}

void seatBooking(){

    cout <<"Choose viewing session type "<< endl
    <<"\1-->Full-Marathon" << endl
    << endl <<"2-->Half-Marathon: ";
    cin >> type;
    //Pay
    if(type==1){
        amount = amount + full;
        //Update seat number
        available_seats = available_seats - 1;
        a_count = a_count+1;
        tickets[a_count][0] = a_count;
        tickets [a_count][1] = 1;
        cout << "Your ticket number is " << tickets[a_count][0] << " and viewing type is Full-Marathon" <<  endl;

    }
    else{
        amount = amount + half;
        //Update seat number
        available_seats = available_seats - 1;
        a_count = a_count+1;
        tickets[a_count][0] = a_count;
        tickets [a_count][1] = 2;
        cout << "Your ticket number is " << tickets[a_count][0] << " and viewing type is Half-Marathon" <<  endl;
    }
    Menu();

}

void freeSeat(){

    cout << Freed seats " << f_ticket<< endl;
    cout << endl << "Enter ticket number of seat to free";
    cin >>f_ticket;
    tickets[f_ticket][0] = 0;
    tickets[f_ticket][1] = 0;
    cout << "Seat for ticket " << f_ticket << " is freed" << endl;


}

void grossProfit(){
    cout <<"Gross profit is " << amount << endl;
}
void changeOption(){
    cout << endl <<"Enter ticket number: ";
    cin>>ticket_no;
    if(tickets[ticket_no][1] == 1){
        cout <<"Viewing type is Full-Marathon" <<endl;
        tickets[ticket_no][1] = 2;
        amount = amount - half;
        cout <<"New viewing type for ticket " << tickets[ticket_no][0] <<" is Half-Marathon" <<endl;
    }
    else{
        cout <<"Viewing type is Half-Marathon" <<endl;
        tickets[ticket_no][1] = 1;
        amount = amount + half;
        cout <<"New viewing type for ticket " << tickets[ticket_no][0] <<" is Full-Marathon" <<endl;
    }
}