using System;

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using System.Collections.Generic;

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using System.Linq;

namespace TestConsole

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{

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public class Automobile

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{

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public Automobile(string idNumber, string make, int year, int price)

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{

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IDNumber = idNumber;

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Make = make;

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Year = year;

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Price = price;

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}

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public string IDNumber { get; set; }

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public string Make { get; set; }

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public int Year { get; set; }

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public int Price { get; set; }

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public override string ToString()

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{

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return "Id Number: " + IDNumber + "Make: " + Make + "Year: " + Year + "Price: " + Price;

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}

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}

public class AutomobileDemo{

public static void Main(string[] args)

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{

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//Declared list for collecting the automobile objects

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List<Automobile> automobiles = new List<Automobile>();

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Console.WriteLine("Please enter the details of eight(8) automobiles");

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//Run the foreach loop for 8 times

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for (var i = 0; i < 8; i++)

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{

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Console.WriteLine("Please enter the details of automobile number :" + (i + 1)) ;

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var idNumber = string.Empty;

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var make = string.Empty;

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int year = 0;

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int price = 0;

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bool isValidEntry = false;

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while (!isValidEntry)

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{

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Console.WriteLine("Enter Id Number:");

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idNumber = Console.ReadLine();

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if (automobiles.Any(s => s.IDNumber == idNumber))

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{

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Console.WriteLine("The automobile ID Number you have entered was already existed, please try again");

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}

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else

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{

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isValidEntry = true;

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}

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}

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Console.WriteLine("Make:");

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make = Console.ReadLine();

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isValidEntry = false;

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while (!isValidEntry)

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{

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Console.WriteLine("Year:");

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isValidEntry = int.TryParse(Console.ReadLine(), out year);

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if(!isValidEntry)

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Console.WriteLine("The year you entered is invalid please try again!");

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}

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isValidEntry = false;

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while (!isValidEntry)

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{

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Console.WriteLine("Price:");

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isValidEntry = int.TryParse(Console.ReadLine(), out price);

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if (!isValidEntry)

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Console.WriteLine("The price you entered is invalid please try again!");

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}

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Automobile automobile = new Automobile(idNumber, make, year, price);

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automobiles.Add(automobile);

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}

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int automobileCount = 1;

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foreach (var automobile in automobiles)

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{

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Console.WriteLine("Automobile Number " + automobileCount);

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Console.WriteLine(automobile.ToString());

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automobileCount++;

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}

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Console.WriteLine("Total Price is " + automobiles.Sum(s=> s.Price));

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//To pause the system until any key is pressed

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Console.ReadLine(); 

}

}

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}