CODEWITHSUNDEEP
c#methods
user4298687
user4298687

Reputation:

Pass variables between methods

I have 2 methods in my program. 1. Start Exam 2. Mark Exam

as you see, in first method i calculated how many questions are correct or wrong.

in second, i want to show the result.

PROBLEM: How can i pass the correctlyAnswers and wrongAnswers and LIST between methods?

this is what i have:

       static void Main(string[] args)
    {
        int menuChoice = 99;
        Question[] questions = new Question[30];


        do
        {
                Console.Clear();

                DisplayMenu();

                menuChoice = InputOutput_v1.GetValidInt("Option");

                switch (menuChoice)
                {
                    case 1:
                        InputOutput_v1.DisplayTitle("Start Exam");
                        CreateQuestion(questions);
                        break;

                    case 2:
                        InputOutput_v1.DisplayTitle("Mark Exam");
                        DisplayAllQuestions(questions);
                        break;
        }

        } while (menuChoice != '0') ;
    }

    public static void StartExam(Question[] questions)
    {
        char[] studentAnswers = new char[30];
        int[] wrongAnswers = new int[30];
        int correctlyAnswered = 0;
        int falselyAnswered = 0;
        string list = "";

        Console.Clear();
        Console.WriteLine("== DO NOT CHEAT! ==\n");
        Console.WriteLine("----------------");

        for (int i = 0; i < studentAnswers.Length; i++)
        {
            Console.WriteLine("\nQuestion {0}", i + 1);
            Console.WriteLine("------------");
            questions[i].DisplayQuestion();

            studentAnswers[i] = InputOutput_v1.GetValidChar("Your Answer (A, B, C, D)");

                if (studentAnswers[i] == questions[i].correctAnswer)
                {
                    correctlyAnswered = correctlyAnswered + 1;
                }

                else
                {
                    falselyAnswered = falselyAnswered + 1;
                    wrongAnswers[i] = i + 1;
                    list += i + 1 + ", ";
                } 
        }
    }
    public static void MarkExam(Question[] questions)
    {

        if (correctlyAnswered >= 15)
        {
            Console.WriteLine("Passed with {0} correct answers", correctlyAnswered);
        }
        else
        {
            Console.WriteLine("Failed with {0} incorrect answers. Incorrect answers are: {1} ", falselyAnswered, list.Remove(list.Length - 2));
        }
        Console.ReadLine();

    }

Upvotes: 0

Views: 2103

Answers (3)

Mi6u3l
Mi6u3l

Reputation: 257

Make the correctlyAnswers, wrongAnswers, and LIST defined as global variables outside your methods, e.g.

private int correctlyAnswered;
private int falselyAnswered;
private Question[] questions;

Upvotes: 1

Rahul
Rahul

Reputation: 77926

Well, why can't you call your MarkExam() method passing those variables like

public static void StartExam(Question[] questions)
{
    char[] studentAnswers = new char[30];
    int[] wrongAnswers = new int[30];
    int correctlyAnswered = 0;
    int falselyAnswered = 0;
    string list = "";

    ........
    MarkExam(questions, wrongAnswers, correctlyAnswered);

In which case you will have to change your method signature accordingly

Upvotes: 1

El Duderino
El Duderino

Reputation: 1392

First, why are you using an array instead of a list? And inside this class your methods don't really need to be static.

Second, create private variables to the class and they can be used in all methods.

public class ExamClass
{
    private List<Question> questions = new List<Question>();
    private List<Question> incorrect = new List<Question>();
    private List<Question> correct = new List<Question>();

    ...
}

Upvotes: 0

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