static void Main(string[] args)
{
Exam exam = new Exam();
String url = "se3314.txt"; // Change URL to location of text file that contains questions
Console.WindowWidth = 100; // 0 < Console.WindowWidth <= Console.LargestWindowWidth
Console.Title = "Multiple Choice Exam";
// Opening message
if (!exam.LoadQuestions(url))
{
Console.WriteLine("\nPress any key to quit...");
Console.ReadKey();
return;
}
else
{
Console.WriteLine("Loaded multiple choice problems from:\n" + url + "\n");
}
// Iterate through questions
while (exam.MoveNext())
{
WriteHorizontalRule();
BaseQuestion question = exam.CurrentQuestion;
question.WriteQuestion();
int choice = 0;
// Validate input
while (!int.TryParse(Console.ReadLine(), out choice) || choice < 1 || choice > exam.CurrentQuestion.NumChoices)
{
Console.WriteLine("Not a valid choice. Try again");
}
// Check answer
if (exam.CheckAnswer(choice))
{
Console.WriteLine("\nCorrect! (" + exam.Average + "% " + exam.QuestionsCorrect + "/" + exam.QuestionsCompleted + ")\n");
}
else
{
Console.WriteLine("\nWrong! (" + exam.Average + "% " + exam.QuestionsCorrect + "/" + exam.QuestionsCompleted
+ ")\nCorrect answer is: " + question.Answer + "\n");
}
}
WriteHorizontalRule();
// Finish exam
Console.WriteLine("You finished with " + exam.Average + "%\nPress any key to quit...");
Console.ReadKey();
}
public bool MoveNext()
{
if (this.questions.Count > 0)
{
this.questionsCompleted++;
this.currentQuestion = this.questions.PickRandom();
this.questions.Remove(this.currentQuestion);
return(true);
}
return(false);
}
public static List <BaseQuestion> LoadQuestions(String url)
{
try
{
using (StreamReader streamReader = new StreamReader(url))
{
String line = "";
List <BaseQuestion> questions = new List <BaseQuestion>();
BaseQuestion question = new BaseQuestion();
while ((line = streamReader.ReadLine()) != null)
{
if (line.StartsWith("QUESTION:"))
{
line = line.Substring(line.IndexOf(':') + 1);
question = new BaseQuestion();
question.Question = line;
}
else if (line.StartsWith("ANSWER:"))
{
line = line.Substring(line.IndexOf(':') + 1);
question.Answer = line;
questions.Add(question);
}
else if (line.Contains(')'))
{
line = line.Substring(line.IndexOf(')') + 1);
question.AddChoice(line);
}
}
return(questions);
}
}
catch (IOException ex)
{
Console.WriteLine(ex.Message);
}
return(null);
}
