how to realize several answers in quiz? - ios

Question

I have created a quiz with 4 answers and one of them is right answer. Questions and answers I keep in plist.( where It have arrays of dictionaries).
Now I want to have more than one right answer to one question. Example: User can select A B C D or A C or B C D etc. and push button "next question".
Please tell me the right way to realize my mission!
Sorry for my ENG, I am Russian.
m.file
enter code here- (void)showNextQuestion
{
if ([self.highScore integerForKey:#"HighScore"]<numCorrect){
[self.highScore setInteger:numCorrect forKey:#"HighScore"];
[self.highScore synchronize];
}
currentQuestion++; //= arc4random()%10;
if (currentQuestion <= [self.questions count]){
self.labelScore.text = [NSString stringWithFormat:#"%d", numCorrect];
self.labelHighestScore.text = [NSString stringWithFormat:#"%d", [self.highScore integerForKey:#"HighScore"]];
NSDictionary* nextQuestion = [self.questions objectAtIndex: currentQuestion];//[self.questions objectForKey:[NSString stringWithFormat:#"%d", currentQuestion]];
NSString* correctAnswer = [nextQuestion objectForKey:#"CorrectAnswer"];
self.answer = correctAnswer;
self.labelA.text = [nextQuestion objectForKey:#"A"];
self.labelB.text = [nextQuestion objectForKey:#"B"];
self.labelC.text = [nextQuestion objectForKey:#"C"];
self.labelD.text = [nextQuestion objectForKey:#"D"];
self.labelQuestion.text = [nextQuestion objectForKey:#"QuestionTitle"];
NSLog(#"%d количество вопросов", countQuestion);
int questNumber = countQuestion+1;
NSString *questNumberString = [[NSString alloc] initWithFormat:#"%d", questNumber];
NSLog(#"%#", questNumberString);
questNum.text = questNumberString;
- (IBAction)buttonPressedA:(id)sender {
//AudioServicesPlaySystemSound(SoundID1);
countQuestion++;
if([self.answer isEqualToString: #"A" ]){
numCorrect += 1;
self.labelScore.text = [NSString stringWithFormat:#"%d", numCorrect];
}
[self showNextQuestion];
}
- (IBAction)buttonPressedB:(id)sender {
// AudioServicesPlaySystemSound(SoundID1);
countQuestion++;
if([self.answer isEqualToString: #"B"]){
numCorrect += 1;
self.labelScore.text = [NSString stringWithFormat:#"%d", numCorrect];
}
[self showNextQuestion];}
- (IBAction)buttonPressedC:(id)sender {
//AudioServicesPlaySystemSound(SoundID1);
countQuestion++;
if([self.answer isEqualToString: #"C"]){
numCorrect += 1;
self.labelScore.text = [NSString stringWithFormat:#"%d", numCorrect];
}
[self showNextQuestion];}
- (IBAction)buttonPressedD:(id)sender {
//AudioServicesPlaySystemSound(SoundID1);
countQuestion++;
if([self.answer isEqualToString: #"D"]){
numCorrect += 1;
self.labelScore.text = [NSString stringWithFormat:#"%d", numCorrect];
}
[self showNextQuestion];}
#end

Answer 1

Inside your plist, make the answer itself a dictionary. Use one key/value pair for the title and the other one to indicate if it is correct or not.
When the user selects an answer, you just have to check the corresponding boolean value (in this case "correct").