#include <iostream>
#include <cctype>
#include <string>
#include <cstring>
using namespace std;

//Declare function proto type
int assignSeat(int seat_num, int row_num, int pass_num);
int num1(char);
int num(char);

int NumSeats = 10;

void InitializeSeats();
void Reserve();
void Cancel();
void ChangeSeat();
void Display();

struct Seat
  {
      char pass_name[80];
      int Available;
  };
  
  struct Seat SeatArray[1][10];
  
int main()
{      
   char seatchioce = 0;
   int row_num = 5;
   char a = 0;
   char w = 0;
  
  int total_passenger = 10;
  
  char arr1[][5] = {"1C","2A","3A","4A","5A",};
  char arr2[][5] = {"6B","7B","8B","9B","10B",};
    
  int MenuChoice;

  InitializeSeats();
  while(1)
  {
      cout << " 1. Reserve" << endl;
      cout << " 2. Cancel" << endl;
      cout << " 3. Change Seat" << endl;
      cout << " 4. Display" << endl;
      cout << " 5. Exit" << endl;

      cout << "Enter your choice: ";
      cin >> MenuChoice;

    if((MenuChoice < 0) && (MenuChoice > 5))
    {
      cout << "Invalid Choice" << endl;
      system("Pause Try Again");
    }
    else
    {
        switch(MenuChoice)
        {
            case 1: Reserve();
                break;
            case 2: Cancel();
                break;
            case 3: ChangeSeat();
                break;
            case 4: Display();
                break;
            case 5:
                exit(1);
        }
    }
    cin.get();  
  }
  
return 0;

}
void Reserve() //This function is for reserv the seats
{
    int pass_num = 10;

    cout << "Wellcome to Airline Passenger seat assignment" << endl;
        
     cout <<"All"<< NumSeats << " seats are available " << endl;
for (j=0; j<10; j++)
	{
		cout << "Please enter your name: ";
		getline(cin,name);
	
		cout << "Choose a class: ";
		cin >> c;
	
		switch(c)
		{
		case 1:
			cout << "First class" << endl;
			cout << "Seats available are 1,2,3,4,5.\n";
			do {
	    cout << "Pick a seat: ";
	    cin >> s[j];
	    for (i=0; i<j; i++) if (s[j]==s[i]) {cout << "Seat taken. ";
		break;}
	  } while (i!=j);
  	  if(s[j] <= 5)
		{

			cout << "\n";
			cout <<" \n";
		cout << "Name: " << name << endl;
		cout << "Class: " << "First class" << endl;
		cout << "Seat no.: " << s << endl;
			cout << "\n";

		}
		else 
			cout << "Wrong number!  No seat for you!\n";
		break;
	case 2: 
		cout << "Economic class\n";
		cout << "Seats available are 6,7,8,9,10.\n";
		do {
		cout << "Pick a seat number: ";
		cin >> s[j];
		for (i=0; i<j; i++) if (s[j]==s[i]) {cout << "Seat taken. ";
	break;}	
  } while (i!=j);
		if(s[j] >= 6)
		{
			cout << "\n";
			cout << "\n";	
		cout << "Name: " << name << endl;
		cout << "Class: " << "Economic class" << endl;
		cout << "Seat no.: " << s[j] << endl;
			cout << "\n";
		}
		else 
			cout << "Wrong number!  No seat for you!\n";
		break;
		default:
				break;
	}
}
}
void Cancel()// This function is for Cancel the seat
{
    char CancelPassengerName[80];

    cout << "Enter the Passenger to be cancelled: ";
    cin >> CancelPassengerName;
    for(int i =0; i <5; i++)
    {
        for(int j=0; j<2; j++)
        {
            
            if(strcmp(SeatArray[i][j].pass_name, CancelPassengerName) == 0)
            {
                NumSeats++;
                SeatArray[i][j].Available = 1;
                return;
            }
        }
    }
    cout << " Passenger not in the list" << endl;
}
void ChangeSeat()//This function is for Change the seat
{
    char MovePassenger[80];
    int SeatRow, SeatColumn;

    cout << "Enter the passenger name to be moved: ";
    cin >> MovePassenger;

    for(int i = 0; i < 5; i++)
    {    for(int j = 0; j < 2; j++)
        {
            if(strcmp(SeatArray[i][j].pass_name, MovePassenger) == 0)
            {
                SeatRow = i;
                SeatColumn = j;
            }
        }
    }

    if(NumSeats <= 0)
    {
        cout << "No seat available there for you cannot change seat" << endl;
        return;
    }
    else{
        for(int i = 0; i < 5; i++)
        {
            for(int j = 0; j < 2; j++)
            {
                if(SeatArray[i][j].Available == 1)
                {
                    strcpy_s(SeatArray[i][j].pass_name, MovePassenger);
                    SeatArray[SeatRow][SeatColumn].Available = 1;
                    SeatArray[i][j].Available = 0;

                    return;
                }
            }
        }
    }
}
void Display()//Display the seat assingment for the all reservation
{
    for(int i = 0; i < 5; i++)
    {
        for(int j = 0; j < 2; j++)
        {
            if(SeatArray[i][j].Available == 0)
            {
                cout << SeatArray[i][j].pass_name << " = " << i+1;
				if (j == 0) { cout << "First Class" << endl; }
				else { cout << "Economy Class" << endl; }
				

            }
            else
            {
                if(j == 1)
                    cout << i+1 << "Economy Class" << endl;
                else
                    cout << i+1 << "first Class" << endl;
            }
        }
    }
}

void InitializeSeats()//Initialy all seats are available
{
    for(int i = 0; i < 5; i++)
    {
        for(int j = 0; j < 6; j++)
            SeatArray[i][j].Available = 1;
    }
}