Creating an exam app

In this recipe, we will create an exam app. For this exam, we will choose some random questions and the user will answer them. At the end, the app will show the user score and start again with a new exam.

Getting ready

First, open Xcode and create a project called Chapter 3 Examination, then create a file called question.swift. This is where we will define a question for an exam.

How to do it...

To create an exam app, follow these steps:

1. Open the storyboard and add a label and three buttons to the view controller. You will have something similar to the following screenshot:
   
2. Copy the following code into the question.swift file:

   struct Question {
       var question:String
       var answer1:String
       var answer2:String
       var answer3:String
       var rightAnswer:Int
       var userAnswer:Int?
       
       init(question:String, answer1:String, answer2:String, answer3:String, rightAnswer:Int){
          self.question = question
           self.answer1 = answer1
           self.answer2 = answer2
    ...