Answer to Question #41521 in C# for Mridul Mehendiratta

Question

The application used to calculate the cost of carrying additional luggage results in erroneous amount, if the weight of the luggage is a fractional number. Help the development team modify the code snippet so that the cost of carrying additional luggage is calculated correctly.

Answer 1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Question38623
{
    class Program
    {
        static void Main(string[] args)
        {
            int pos = 3;
            ConsoleKeyInfo key;
            Console.WriteLine("Please select your travelling class: \n(use arrows keys UP, DOWN , ENTER - to submit, ESC - Exit)\n");
            Console.WriteLine("A - 40kg max      *");
            Console.WriteLine("B - 25kg max");
            Console.WriteLine("C - 15kg max");
            do
            {
               key=Console.ReadKey(true);
                switch(key.Key)
                {
                    case ConsoleKey.UpArrow: 
                        Console.SetCursorPosition(18, pos);
                        Console.Write(" ");
                        if (pos == 3) pos = 5;
                        else pos--;
                        Console.SetCursorPosition(18, pos);
                        Console.Write("*");
                        break;
                    case ConsoleKey.DownArrow: 
                        Console.SetCursorPosition(18, pos);
                        Console.Write(" ");
                        if (pos == 5) pos = 3;
                        else pos++;
                        Console.SetCursorPosition(18, pos);
                        Console.Write("*");
                        break;
                    case ConsoleKey.Escape: Environment.Exit(0); break;
                }
            } while (key.Key != ConsoleKey.Enter);
       
            Console.SetCursorPosition(0,8);
            Console.Write("Please enter weight of your luggage: (WHOLE number only)\n");
            string s_weight ;
            long weight;
            bool pass;
                     
                s_weight=Console.ReadLine();
                pass = Int64.TryParse(s_weight, out weight);
                if (!pass||weight<0) 
                { 
                    Console.WriteLine("\nWrong Input. Good Bye");
                    Console.ReadKey();
                    Environment.Exit(0);
                }
                switch (pos)
                {
                    case 3:
                        if (weight > 40)
                        {
                            Console.WriteLine("Additional payment " + ((weight - 40) * 2) + "$");
                        }
                        else
                        {
                            Console.WriteLine("No Additional payment");
                        }
                        break;
                    case 4:
                        if (weight > 25)
                        {
                            Console.WriteLine("Additional payment " + ((weight - 25) * 2) + "$");
                        }
                        else
                        {
                            Console.WriteLine("No Additional payment");
                        }
                        break;
                    case 5:
                        if (weight > 15)
                        {
                            Console.WriteLine("Additional payment " + ((weight - 15) * 2) + "$");
                        }
                        else
                        {
                            Console.WriteLine("No Additional payment");
                        }
                        break;
                }
            Console.Read();
        }
    }
}