//start exam
public static void StartExam()
{
//delete all answers from Answers list from previous try
Answers.Clear();
//number of the question
int i = 0;
foreach (var question in Questions)
{
i++;
Console.WriteLine($"Question {i}\n" +
"-----------------\n" +
$"{question.Question}\n" +
$"A. {question.Choise1}\n" +
$"B. {question.Choise2}\n" +
$"C. {question.Choise3}\n" +
$"D. {question.Choise4}\n");
Console.WriteLine("Your answer (A,B,C,D)");
//check if the input is in correct form
Input:
if (!CorrectChoise.TryParse(Console.ReadLine(), true, out CorrectChoise cc))
{
//if input not in correct form
Console.WriteLine("Write A, B, C or D");
goto Input;
}
//adding user's answer to Answers list
Answers.Add(cc);
Console.Clear();
}
}
public MultipleChoiceQuestion(string q, string c1, string c2, string c3, string c4, CorrectChoise cc)
{
Question = q;
Choise1 = c1;
Choise2 = c2;
Choise3 = c3;
Choise4 = c4;
CorrectChoise = cc;
}
//import questions
public static void ImportQuestions()
{
MakeHead("Import Questions");
Console.WriteLine("Enter the location of the file to read from:");
string filename = Console.ReadLine();
if (File.Exists(filename))
{
using (StreamReader sr = new StreamReader(filename))
{
//clear questions list
Questions.Clear();
//read all text
string allText = sr.ReadToEnd();
//split text into questions
string[] fullQuestions = allText.Split('-');
//for each question from file
foreach (string fullQuestion in fullQuestions)
{
//getting rid of useless white space characters and cutting-off each string
string[] q = fullQuestion.Trim().Split('\n');
//the first string is the question
string question = q[0].Substring(3);//Substring to cut-off letter and space (A. , B. , etc.)
string choise1 = q[1].Substring(3);
string choise2 = q[2].Substring(3);
string choise3 = q[3].Substring(3);
string choise4 = q[4].Substring(3);
CorrectChoise.TryParse(q[5], true, out CorrectChoise cc);//don't forget to enter correct choise into file :)
//putting all question data into the new question and adding it into the list
var newQuestion = new MultipleChoiceQuestion(question, choise1, choise2, choise3, choise4, cc);
Questions.Add(newQuestion);
}
}
}
else
{
Console.WriteLine($"Could not find a part of the path '{filename}'");
}
Console.WriteLine("Press any key to continue.");
Console.ReadKey();
Console.Clear();
}
//create new question
public static void CreateNewQuestion()
{
MakeHead("New Question");
Console.WriteLine($"There are {Questions.Count} questions in the exam.\n");
Console.WriteLine("Enter the question:");
string newQ = Console.ReadLine();
Console.WriteLine("Enter choice 1 for the question:");
string newC1 = Console.ReadLine();
Console.WriteLine("Enter choice 2 for the question:");
string newC2 = Console.ReadLine();
Console.WriteLine("Enter choice 3 for the question:");
string newC3 = Console.ReadLine();
Console.WriteLine("Enter choice 4 for the question:");
string newC4 = Console.ReadLine();
Console.WriteLine("Enter the correct choice (A, B, C, D):");
//check if user's input is in correct form (A,B,C,D)
Parse:
if (!CorrectChoise.TryParse(Console.ReadLine(), true, out CorrectChoise cc))
{
//if input not in correct form
Console.WriteLine("Write A, B, C or D");
goto Parse;
}
//create new question object and putting all usser's inputs inside it
MultipleChoiceQuestion newQuestion = new MultipleChoiceQuestion(newQ, newC1, newC2, newC3, newC4, cc);
Questions.Add(newQuestion);
Console.WriteLine($"Successfully added question {Questions.Count} to exam.\n" +
"Press any key to continue.");
Console.ReadKey();
Console.Clear();
}
//edit question
public static void EditQuestion()
{
MakeHead("Edit Question");
Console.WriteLine("Enter the question number to edit:");
//check if user's input is integer
Input:
if (!int.TryParse(Console.ReadLine(), out int i))
{
//if user inputs not integer
Console.WriteLine("Write a number");
goto Input;
}
//check if there is the user inputted index in the questions list
if (i - 1 < Questions.Count)
{
var q = Questions[i - 1];
Console.WriteLine("The question is as follows:\n" +
$"Question {i}\n" +
"-----------------\n" +
$"{q.Question}\n" +
$"A. {q.Choise1}\n" +
$"B. {q.Choise2}\n" +
$"C. {q.Choise3}\n" +
$"D. {q.Choise4}");
Console.WriteLine();
Console.WriteLine("Enter the question:");
q.Question = Console.ReadLine();
Console.WriteLine("Enter choice 1 for the question:");
q.Choise1 = Console.ReadLine();
Console.WriteLine("Enter choice 2 for the question:");
q.Choise2 = Console.ReadLine();
Console.WriteLine("Enter choice 3 for the question:");
q.Choise3 = Console.ReadLine();
Console.WriteLine("Enter choice 4 for the question:");
q.Choise4 = Console.ReadLine();
Console.WriteLine("Enter the correct choice (A, B, C, D):");
//check if user's input is in correct form
Choice:
if (!CorrectChoise.TryParse(Console.ReadLine(), true, out CorrectChoise cc))
{
//if user's input not in correct form
Console.WriteLine("Only A, B, C or D allowed");
goto Choice;
}
Console.WriteLine($"Successfully updated question {i}");
}
else
{
Console.WriteLine($"Error! {i} is not a valid question number.");
}
Console.WriteLine("Press any key to continue.");
Console.ReadKey();
Console.Clear();
}
