public async Task <IActionResult> AddQuestion(int id, [FromBody] Question question)
        {
            var noteq  = new Note_Question();
            var examen = await _context.Examens.FindAsync(id);

            if (examen != null)
            {
                noteq.examen   = examen;
                noteq.question = question;
                _context.Add(question);
                _context.Add(noteq);

                _context.SaveChanges();
                return(Ok(new
                {
                    question
                }));
            }
            return(NotFound());
        }
        public async Task <ActionResult <Note_Question> > PostNote_Question(int idex, int idqs, Note_Question note_Question)
        {
            var ex = await _context.Examens.FindAsync(idex);

            var qs = await _context.Questions.FindAsync(idqs);

            if (await _context.Note_Questions.FindAsync(note_Question.id) == null)
            {
                note_Question.examen   = ex;
                note_Question.question = qs;
                _context.Note_Questions.Add(note_Question);
                await _context.SaveChangesAsync();

                return(Ok(new
                {
                    note_Question
                }));
            }
            return(NotFound());
        }