While Loop Going Infinitely Long

Question

I want the code to continue running until a user guesses the correct answer. However the code runs something else infinitely.

public class Quiz{
    //Make various questions with correct/incorrect options
    /*
    * Suggestion
    * Question 1
    * How old was the first king of sweden when he passed?
    * Options1
    * 40
    * 60
    * 80
    */
    public static int correctAnswer = 40;
    public static int guess = Convert.ToInt32(Console.ReadLine());

    public static void Guess(){
        System.Console.WriteLine("How old was the 1st King of Sweden\n");
        System.Console.WriteLine("when he passed away?");
     while(guess != correctAnswer){
        if(guess == correctAnswer){
            System.Console.WriteLine("Correct answer. Congratulations.");
        } else{
            System.Console.WriteLine("Try again.");
        }
     }
    }
}

I tried changing from do-while to while but that did not help.

Answer 1

you never assign anything to guess after it was set the very first time. You need to re-assign guess in every iteration:

public static int correctAnswer = 40;

public static void Guess()
{
    System.Console.WriteLine("How old was the 1st King of Sweden\n");
    System.Console.WriteLine("when he passed away?");
    var guess = Convert.ToInt32(Console.ReadLine());
    while(guess != correctAnswer)
    {
        System.Console.WriteLine("Try again.");
        guess = Convert.ToInt32(Console.ReadLine());
    }

    // when we reach the end of the loo, user gave a correct answer
    System.Console.WriteLine("Correct answer. Congratulations.");
}