Question

Problem (Computer Assisted Instruction) The use of computers in education is referred to as Computer Assisted Instruction (CAI). Develop a Java application that can help an elementary school student learn division of two decimal integer numbers. When the application is launched, its behaviour should be like as described: 1. The application should welcome the learner and ask if ready to learn the topic. Assume the application can assist only to learn division of two integer numbers. 2. If the user is ready to learn, then show a question like "what will be the quotient when n1 is divided by n2?" and wait for the response. Both n1 and n2 are randomly generated integer numbers with maximum of two digits, i.e., O S number < 100. 3. When the learner enters the response, then the application should get the response and determine whether the response is correct or not. 4. If the response is correct, then appreciate the learner and add 5 to its score. 5. If the response is incorrect, then provide the correct answer along with the question and possibly give some explanation for the correct answer. 6. The application should then ask, "will you like to continue or stop?" 7. If the learner chooses to continue then repeat steps 2-6. 8. If the learner chooses to stop, then the application should display message to appreciate the learner, how many questions tried, how many questions correctly answered, how many incorrectly answered, and score of the learner Notes: Greeting messages (like welcome or thank you) if done with learner name are considered more effective than the generic messages like Welcome Muhammad is considered better than Welcome. For random number generation, please use an appropriate method of class Random (Note that it is a requirement not an option), Requirements 1. Develop a Java program with the above specified behaviour 2 Test your program effectively. Include your testing observation in the submission i.

Need urgently.Plz use math.random() formula for random numbers and show the output as recquired.

Answer 1

/* Please read all the comments */

/* This division is integer division. You could keep as double type. You can change accordingly */

/* Source code */

import java.io.*; //To get the user input from keyboard

class LearnDivision

{

    static BufferedReader br  = null; //To read the user input from the keyboard

    static int totalCorrectAnswers; //Keep track of correct answers

    static int totalQuestionAttempted; //Keep track of total division questions asked

    static int score; // For adding the score with correct answers

    static String name;

    public LearnDivision() throws Exception //Constructor to initilized the object of the class and setup the basic things

    {

        br = new BufferedReader(new InputStreamReader(System.in)); //Set up the keyboard as input

        totalCorrectAnswers = 0 ;

        totalQuestionAttempted = 0;

        welcomeAndStartLearning();

    }

    static void welcomeAndStartLearning() throws Exception //As BufferedReader object as input from keyboard can throws Exception

    {

        //Step 1

        System.out.print("Hi. What is  your name ? ");

        name = br.readLine(); //Read the name

        System.out.println("Welcome "+name + ". Are you ready to learn the topic? (Press enter)");

        br.readLine(); //Get the input as Enter and go to startLearning

        continueLearning();

    }

    static boolean checkAnswer(int n1,int n2,int response)

    {

        totalQuestionAttempted++;

        if(n1 / n2 == response)

        {

            totalCorrectAnswers++;

            //Add the score 5 for correct answers

            score += 5;

            return true;

        }

        return false; // coming here means response was correct  

    }

    static boolean proceedLearning() throws Exception

    {

        System.out.println("\n\nwill you like to continue or stop. \n(Press 0 if want to stop, else 1 to continue).\t");

        int choice = Integer.parseInt(br.readLine());

        return (choice==1); //choice is setup with the use input

    }

    static void continueLearning() throws Exception

    {

        //Step 2

        int MINIMUM = 0;

        int MAXIMUM = 100;

        int n1 = ((int) (Math.random()*(MAXIMUM - MINIMUM))) + MINIMUM; //Setting number 1

        int n2 = ((int) (Math.random()*(MAXIMUM - MINIMUM))) + MINIMUM; //Setting number 2

        String appreciateMessage[]={"Wow. Correct Answer.","Great.", "You are Genius."}; //Show any of these appreciate message randomly for correct answer

        //Printing the message for question

        String incorrectMessage[]={"Sorry. Incorrect Answer.","You could try better.","No. Incorrect Answer."};

        System.out.print("what will be the quotient when "+ n1 + " is divided by " + n2+" ?\t");

        int response = Integer.parseInt(br.readLine()); //Get the response

        boolean isCorrrectAnwer = checkAnswer(n1,n2,response);

        if(isCorrrectAnwer)

        {

            int appreciateMessageIndex = ((int) (Math.random()*(2 - 0)));

            System.out.println(appreciateMessage[appreciateMessageIndex]);

        }

        else

        {

            int incorrectMessageIndex = ((int) (Math.random()*(2 - 0)));

            System.out.println(incorrectMessage[incorrectMessageIndex]);

            //Now show the question and answer of that with explaination

            System.out.print("\n\nExplanation:\nWhen " +  n1 + " is divided by " + n2 +" then quotient would be " + (n1/n2)  );

        }

        //Get User Input if want to proceed learning

        if(proceedLearning()) continueLearning();

        else

        {

            //show the results

            showResults();

        }

    }

    static void showResults()

    {

        int totalIncorrectAnswers = 0; // Keep track of total wrong answers

        totalIncorrectAnswers = totalQuestionAttempted - totalCorrectAnswers;

        

        //Show the results

        String result = "\n\nGreat " + name + ". Weldone.\n";

        result += "You attempted total " + totalQuestionAttempted + " questions.\n";

        result += "out of which total correct answer is : " + totalCorrectAnswers +"\n";

        result += "total incorrect answers is :" + totalIncorrectAnswers +"\n";

        result += "total scores for correct answers is: " + score +"\n";

        result += "Thanks for learning. Bye.";

        System.out.println(result);

    }

    public static void main(String arg[]) throws Exception

    {

        //lanuch the assistance

        LearnDivision learn = new LearnDivision();

    }

}

/* Editor screen */

/* Please refere the below screen for the output of the above source code while running */

/* That's all. Thanks */