Answered Essay: C# – I would like to output the results of the dice roll to the console however I am getting the error "An object refe

Hi the error you getting on running the appliaction because GetFaceValue() is non-static method and in order to access it you must have to create object of Die class. In given code there are two constructors of Die so you can create object of Die like

//first way using default costructor

Die die1 = new Die();

//second way using parameterized constructor

Die die2 = new Die(2);//please note that 2 is only for understanding purpose feel free to change as per need.

then call the method GetFaceValue() like below

die.GetFaceValue();

or

die1.GetFaceValue();

Please find below the fixed solution:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace DiceRoller
{
public class Die
{
public static void Main(string[] args)
{
//you must create object of class
//in order to access non static method
//GetFaceValue() is non static method
//and here obj is object of Die
//obj.GetFaceValue() is the right way to call it
Die obj = new Die();
Console.WriteLine(“Face Value : {0}”, obj.GetFaceValue());
Console.WriteLine(“Press any key to continue….”);
Console.ReadLine();
}
private const int SIX_SIDED = 6;
private const int DEFAULT_FACE_VALUE = 1;
private const int MIN_FACES = 3;
/// <summary>
///
/// </summary>
private int numFaces; //number of sides on die
private int faceValue; // which side is showing
private static Random randomNumber = new Random();

public Die()
{
numFaces = SIX_SIDED;
faceValue = DEFAULT_FACE_VALUE;
RollDie();//added RollDie()
}
/// <summary>
/// Allows user to specify the number of sides on a Die.
/// If “faces” is less than 3, a six-sided die is instantiated.
/// </summary>
/// <param name=”faces”> the numberr of sides</param>
public Die(int faces)
{
if (faces >= MIN_FACES)
{
numFaces = faces;
}
else
{
numFaces = SIX_SIDED;
}
RollDie();
}
/// <summary>
/// Simulates the rolling of a Die.
/// </summary>
public void RollDie()
{
faceValue = randomNumber.Next(1, numFaces + 1);
} // end RollDie
/// <summary>
/// Die accessor
/// </summary>
/// <returns> The current face of the Die</returns>
public int GetFaceValue()
{
return faceValue;
} //end GetFaceValue
}// end Class Die
}

//OUTPUT1:

//OUTPUT2: