objective-c - Objective C でパーセンテージを表示する

Question

試験の最後にパーセンテージをユーザーに表示しようとしています。基本的に、myScore を質問の総数である 70 で割るコード行が必要です。

試験終了時のコードは次のとおりです。

NSInteger endOfQuiz = [theQuiz count];
if((((questionNumber - 1) * 6) + 6) == endOfQuiz)
{
    // Game is over.
    if(myScore >= 49 )
    {
        NSString *finishingStatement = [[NSString alloc] initWithFormat:@"Practice Exam concluded. Congratulations, you have passed with a 70%% or better! \nYou scored %i out of 70!", myScore];
        theQuestion.text = finishingStatement;
        answerResult.text = @"";
        counterLabel.text = @"";        }
    else
    {
        NSString *finishingStatement = [[NSString alloc] initWithFormat:@"Practice Exam concluded. Unfortunately, you have failed with less than 70%%, keep practicing! \nYou scored %i out of 70.", myScore];
        theQuestion.text = finishingStatement;
        counterLabel.text = @"";

    }
    theLives.text = @"";
    answerResult.text = @"";
    // Make button 1 appear as a reset game button
    restartGame = YES;
    [answerOne setHidden:NO];
    [answerOne setTitle:@" Try this Practice Exam again" forState:UIControlStateNormal];

}