Nsryjdtyk

Hello i am learning programming and trying to create a simple console app for users to buy movie tickets.

i am currently using a lot of loops and i would like to know if there is a way to:

1:Store user input from the loops.

2:take stored data from the loops and add it into a final tally.

I have tried Using an Array to store user inputs from the loop but when i want to take the data to be then stored in a final tally i get a error: Operator cannot be applied to operands of type 'int' and 'int'.

I do not want to post my full source but hopfully seeing my vairables should help you understand what i need to track.

Thank you in advanced, any help is welcome.

            //Ticket sale math Values

            double TotalIncome;

            double IncomeFromChild;

            double IncomeFromAdult;

            double IncomeFromStudent;

            double VATFinal;



            //Tickets Sold (name of film or total)

            double FilmA = 33;

            double FilmB = 15;



            double TotalTicketsSold;

            float PeopleServed;



            //Ticket Sale Counters

            double ChildTickets = 0;

            double Adulttickets = 0;

            double StudentTickets = 0;





            //Array For Ticket prices, sales and user input

            var TicketChoices = new int[3];



            var TicketAmount = new int[48];



            //Maxxium tickets allowed for each film

            int FilmA = 33;

            int FilmB = 15;

            int TotalTickets = 48;

If you want to collect a bunch of something, a good first step is to create a class or struct.

Here's a basic idea - I'm not going to get into best practices or anything:

public class UserInput

{

    public decimal IncomeFromChild { get; set; }

    public decimal IncomeFromAdult { get; set; }

    public decimal IncomeFromStudent { get; set; }        

    public decimal TotalIncome => IncomeFromChild + IncomeFromAdult + IncomeFromStudent;

}

As you receive each set of values, you can create an instance of UserInput.

var myInput = new UserInput {IncomeFromChild = 5.00M, IncomeFromAdult = 3.5M};

That makes the original question much easier to answer. How do we store these? When we want to store some of something, we use a collection.

Perhaps the most commonly used collection is a List, because you can just add stuff to it.

Add the import using System.Collections.Generic; to the top of your file first.

var myListOfInputs = new List<UserInput>();

myListOfInputs.Add(myInput);

Then you can look at all the items in the list like this:

decimal total = 0M;

foreach(var input in myListOfInputs)

{

    total = total + input.TotalIncome;

}

There are also a lot of extension methods for performing operations on collections. If you add this import to the beginning of a file:

using System.Linq;

You can use this:

var total = myListOfInputs.Sum(i => i.TotalIncome);

It's essentially the same as the loop above, just shorter to write. It doesn't hurt to learn by writing some things like that out the long way.