Question

C# Question. Please do a lot of documenting of what your code did and thorough explaining in your // comments.

A small airline has just purchased a computer for its new automated reservations system. You have been asked to develop the new system. You’re to write an app to assign seats on each flight of the airline’s only plane (capacity: 10 seats). Display the following alternatives: Please enter 1 for First Class or 2 for Economy. If the user types 1, your app should assign a seat in the first-class section (seats 1–5). If the user types 2, your app should assign a seat in the economy section (seats 6–10). Use a one-dimensional array of type bool to represent the seating chart of the plane. Initialize all the elements of the array to false to indicate that all the seats are empty. As each seat is assigned, set the corresponding element of the array to true to indicate that the seat is no longer available. Your app should never assign a seat that has already been assigned. When the economy section is full, your app should ask the person if it’s acceptable to be placed in the first-class section (and vice versa). If yes, make the appropriate seat assignment. If no, display the message "Next flight leaves in 3 hours."

Answer 1

I have added enough comments in the code for better understanding.

There might be few cases which I might have missed, because of the lack of more information.

Here is the code for the above problem:

using System;
using System.Collections;

                  
public class Program
{
   // boolean array that keeps track whether a seat is booked or not.
   static bool[] seat = new bool[10];
   // names of all seats are stored in tickets arraylist.
   static ArrayList tickets = new ArrayList(10);
   public static void Main()
   {
       Console.WriteLine("Welcome to Automated Reservation System!");
       // variable for while loop initialized to false.
       bool quit = false;
       // initializing all seats to false and all tickets to not booked status.
for(int i=0; i<10; i++)
{
seat[i] = false;
           tickets.Add("Not Booked");
}
       //run this loop untill quit becomes equal to true ie, till user selects 4th operation.
       while(!quit)
       {
           int choice;
           Console.WriteLine(" 1) Press 1 to book seat in First class ");
           Console.WriteLine(" 2) Press 2 to book seat in Economy class ");
           Console.WriteLine(" 3) Press 3 to display all tickets ");
           Console.WriteLine(" 4) Press 4 to quit the application ");
           //Console.readline reads input in string format. so type conversion to integer is required to assign it to choice.
           choice = Convert.ToInt32(Console.ReadLine());
           switch (choice)
           {
           case 1:
               // booking seat for people who are interested in first class
               FirstClassBooking();
               break;
           case 2:
               // booking seat for people who are interested in economy class
               EconomyClassBooking();
               break;
           case 3:
   //displaying the names and seatnumbers of all tickets, if ticket is not booked then display Not Booked for that seatnumber.
               DisplayTickets();
               break;
          case 4:
           // making quit variable to true stops the loop and finally exits form the application.
               quit = true;
               break;
           default:
               Console.WriteLine(" Please enter valid input ");
               break;
           }
          
       }
   }
   // booking seat for people who are interested in first class
   public static void FirstClassBooking()
   {
       // a variable that determines if a seat is alloted or not in that particular transaction.
       string name;
       bool assigned= false;
       Console.WriteLine("Booking Seat in First Class...");
       Console.WriteLine("Please enter your name...");
       name = Console.ReadLine();
       for(int i =0; i<5; i++)
       {
           if(!seat[i])
           {
               seat[i]=true;
               tickets[i] = name;
               assigned = true;
               break;
           }
       }
       // incase seat is not alloted among 1-5 seats, we will run the following if block and ask the user if he's interested in Economy class.
       if(!assigned)
       {
           int choice;
           Console.WriteLine("Seats in First Class are full, Is it okay to book a seat in Economy class? press 1 for yes or Press 2 for no ");
           //Console.readline reads input in string format. so type conversion to integer is required to assign it to choice.
           choice = Convert.ToInt32(Console.ReadLine());
           switch (choice)
           {
           case 1:
               // initiating economy class booking if seats are full in first class
               EconomyClassBooking();
               break;
           default:
               Console.WriteLine("Next flight leaves in 3 hours.");
               break;
           }
          
       }
      
   }
  
   public static void EconomyClassBooking()
   {
       // a variable that determines if a seat is alloted or not in that particular transaction.
       bool assigned= false;
       string name;
       Console.WriteLine("Booking Seat in Economy Class...");
       Console.WriteLine("Please enter your name...");
       name = Console.ReadLine();
       for(int i =5; i<10; i++)
       {
           if(!seat[i])
           {
               seat[i]=true;
               tickets[i] = name;
               assigned = true;
               break;
           }

       }
       // incase seat is not alloted among 6-10 seats, we will run the following if block and ask the user if he's interested in First class.
       if(!assigned)
       {
           int choice;
           Console.WriteLine("Seats in Economy Class are full, Is it okay to book a seat in First class? press 1 for yes or Press 2 for no ");
           //Console.readline reads input in string format. so type conversion to integer is required to assign it to choice.
           choice = Convert.ToInt32(Console.ReadLine());
           switch (choice)
           {
           case 1:
               // initiating first class booking if seats are full in first class
               FirstClassBooking();
               break;
           default:
               Console.WriteLine("Next flight leaves in 3 hours.");
               break;
           }
          
       }
   }
  
   //displaying the names and seatnumbers of all tickets, if ticket is not booked then display Not Booked for that seatnumber.
   public static void DisplayTickets()
   {
       Console.WriteLine("Here are the tickets booked till now : ");
       for(int i=0; i<10; i++) {
           Console.WriteLine( (i+1)+ " "+tickets[i]);
       }
   }
}