Question unable to create the trace listener

Koroshiya

New member
Joined
May 14, 2019
Messages
4
Programming Experience
Beginner
C#:
using static System.Console;

namespace WritingFunctions
{
    class Program
    {
        static double Factorial(double number)
        {
            if (number < 1)
            {
                return 0;
            }else if (number == 1)
            {
                return 1;
            }
            else
            {
                return number * Factorial(number - 1);
            }
        }

        static void RunFactorial()
        {
            Write("Enter a number (Between 0 and 170): ");
            if(double.TryParse(ReadLine(), out double number))
            {
                WriteLine($"{number:N0}! = {Factorial(number):N0}");
            }
            else
            {
                WriteLine("You did not enter a valid number.");
            }
        }
        
        static string CardinalToOrdinal(int number)
        {
            switch (number)
            {
                case 11:
                case 12:
                case 13:
                    return $"{number}th";
                default:
                    string numberAsText = number.ToString();
                    char lastDigit = numberAsText[numberAsText.Length - 1];
                    string suffix = string.Empty;
                    switch (lastDigit)
                    {
                        case '1':
                            suffix = "st";
                            break;
                        case '2':
                            suffix = "nd";
                            break;
                        case '3':
                            suffix = "rd";
                            break;
                        default:
                            suffix = "th";
                            break;
                    }
                    return $"{number}{suffix}";
            }
        }
        
        static void RunCardinalToOrdinal()
        {
            for (int number = 1; number <= 50; number++)
            {
                Write($"{CardinalToOrdinal(number)} ");
            }
        }
        
        static decimal SalesTax (decimal amount, string twoLetterRegionCode)
        {
            decimal rate = 0.0M;
            switch (twoLetterRegionCode)
            {
                case "CH":  // Switzerland
                    rate = 0.08M;
                    break;
                case "DK":  // Denmark
                case "NO":  // Norway
                    rate = 0.25M;
                    break;
                case "GB":  // (Now Dead) Great Britain
                case "FR":  // France
                    rate = 0.2M;
                    break;
                case "HU":  // Hungary
                    rate = 0.27M;
                    break;
                case "OR":  // Oregon
                case "AK":  // Alaska
                case "MT":  //Monatana
                    rate = 0.0M;
                    break;
                case "ND":  //North Dakota
                case "WI":  // Wisconsin
                case "ME":  // Maryland
                case "VA":  //Virginia
                    rate = 0.05M;
                    break;
                case "CA":  // California
                    rate = 0.0825M;
                    break;
                default:  // Most US States
                    rate = 0.06M;
                    break;
            }
            return amount * rate;
        }
        
        static void RunSalesTax()
        {
            Write("Enter an amount: ");
            string amountintext = ReadLine();
            Write("Enter a two letter region code: ");
            string region = ReadLine();
            if (decimal.TryParse(amountintext, out decimal amount))
            {
                decimal taxToPay = SalesTax(amount, region);
                WriteLine($"You must pay {taxToPay} in sales tax.");
            }
            else
            {
                WriteLine("You did not a enter a valid amount.");
            }
        }
        
        static void TimesTable (byte number)
        {
            WriteLine($"This is the {number} times table");
            for (int row = 1; row <= 12; row++)
            {
                WriteLine($"{row} X {number} = {row * number}");
            }
        }
        
        static void RunTimesTable()
        {
            Write("Enter a number between 0 and 255: ");
            if(byte.TryParse(ReadLine(), out byte number))
            {
                TimesTable(number);
            }
            else
            {
                WriteLine("You did not enter a valid number.");
            }
        }

        static void Main(string[] args)
        {
            //RunTimesTable();
            //RunSalesTax();
            //RunCardinalToOrdinal();
            RunFactorial();
        }
    }
}
In the above code taken from a book i am currently reading, the output is supposed to be some file named log.txt to be formed, but it is ot happening with me.
please help
OS: Windows 10
Book: c# 7.1 and dotnet core 2.0 modern cross platform development by Mark J. Price
 
Last edited by a moderator:

Koroshiya

New member
Joined
May 14, 2019
Messages
4
Programming Experience
Beginner
Sorry, I posted the wrong code
But, I got the answer- it was in bin\debug folder
 
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