why won't my program print the countOfX values?

Question

thanks for all your help in the last few q's! I think I've only got one issue remaining. For some reason it won't print the values of countOfX variables? As far as I can see it should work so there is obviously something im missing!

hopefully somebody can point me in the right direction at least. Any help is greatly appreciated.

using System

namespace Part1Skeleton
{
class FizzBuzz
{
    int countOfFizz;
    int countOfBuzz;
    int countOfFizzBuzz;
    int countOfPrime;

    public static void Main()
    {
        int input = 1;
        //string enter;

        FizzBuzz fb = new FizzBuzz();
        fb.BeginTesting();

        while (input <= 20)
        {
            //Console.WriteLine("Please enter a number: ");
            //enter = Console.ReadLine();
            //input = int.Parse(enter);

            fb.BeginTesting();
            fb.IsFizz(input);
            fb.IsBuzz(input);
            fb.IsFizzBuzz(input);
            fb.IsPrime(input);

            input++;
        }
        fb.TotalFizz();
        fb.TotalBuzz();
        fb.TotalFizzBuzz();
        fb.TotalPrime();
    }

    public bool IsFizz(int input)
    {
        if (input % 9 == 0 && input != 0)
        {
            Console.WriteLine("Fizz");
            countOfFizz++;
            return true;
        }
        return false;
    }

    public bool IsBuzz(int input)
    {
        if (input % 13 == 0 && input != 0)
        {
            Console.WriteLine("Buzz");
            countOfBuzz++;
            return true;
        }
        return false;
    }

    public bool IsFizzBuzz(int input)
    {
        if (input % 9 == 0 && input % 13 == 0 && input != 0)
        {
            Console.WriteLine("FizzBuzz");
            countOfFizzBuzz++;
            return true;
        }
        return false;
    }

    public bool IsPrime(int input)
    {
        if (input == 0 || input == 1)
        {
            Console.WriteLine(input);
            return false;
        }
        else if (input % 9 == 0 || input % 13 == 0)
        {
            return false;
        }
        else
        {
            for (int i = 2; i < input; i++)
            {
                if (input % i == 0 && i != input)
                {
                    Console.WriteLine(input);
                    return false;
                }
            }
        }
        Console.WriteLine("Prime");
        countOfPrime++;
        return true;
    }

    public void BeginTesting()
    {
        countOfFizz = 0;
        countOfBuzz = 0;
        countOfFizzBuzz = 0;
        countOfPrime = 0;
    }

    public int TotalFizz()
    {
        Console.WriteLine("Number of Fizz: ");
        Console.Write(countOfFizz);
        return countOfFizz;
    }

    public int TotalBuzz()
    {
        Console.WriteLine("Number of Buzz: ");
        Console.Write(countOfBuzz);
        return countOfBuzz;
    }

    public int TotalFizzBuzz()
    {
        Console.WriteLine("Number of FizzBuzz: ");
        Console.Write(countOfFizzBuzz);
        return countOfFizzBuzz;
    }

    public int TotalPrime()
    {
        Console.WriteLine("Number of Prime: ");
        Console.Write(countOfPrime);
        return countOfPrime;
    }

}

}

Answer 1

Why are you creating new instances of FizzBuzz in while loop? Just create a single instance before the start of while loop and use it throughout your program.

Try this main code

public static void Main()
    {
        int input = 1;
        //string enter;

       FizzBuzz fb = new FizzBuzz(); // create a single instance
       fb.BeginTesting(); // start testing

        while (input <= 20)
        {
            //Console.WriteLine("Please enter a number: ");
            //enter = Console.ReadLine();
            //input = int.Parse(enter);
            fb.IsFizz(input);
            fb.IsBuzz(input);
            fb.IsFizzBuzz(input);                
            fb.IsPrime(input);

            input++;
        }

        fb.TotalFizz();            
        fb.TotalBuzz();            
        fb.TotalFizzBuzz();            
        fb.TotalPrime();
    }