programmingex5 2 java

1import java.util.Scanner;
2 
3public class ProgrammingEx5_2 {
4 public static void main(String[] args) {
5  final int NUMBER_OF_QUESTIONS = 10; // Number of questions
6  int correctCount = 0; // Count the number of correct answers
7  int count = 0; // Count the number of questions
8  long startTime = System.currentTimeMillis();
9  String output = ""; // output string is initially empty
10  Scanner input = new Scanner(System.in);
11 
12  while (count < NUMBER_OF_QUESTIONS) {
13   // 1. Generate two random single-digit integers
14   int number1 = (int) (Math.random() * 16);
15   int number2 = (int) (Math.random() * 16);
16 
17   // 3. Prompt the student to answer “What is number1 + number2?”
18   System.out.print("What is " + number1 + " + " + number2 + "? ");
19   int answer = input.nextInt();
20 
21   // 4. Grade the answer and display the result
22   if (number1 + number2 == answer) {
23    System.out.println("You are correct!");
24    correctCount++;
25   } else
26    System.out.println("Your answer is wrong.\n" + number1 + " + "
27      + number2 + " should be " + (number1 + number2));
28 
29   // Increase the count
30   count++;
31 
32   output += "\n" + number1 + " + " + number2 + "=" + answer
33     + ((number1 + number2 == answer) ? " correct" : " wrong");
34  }
35 
36  long endTime = System.currentTimeMillis();
37  long testTime = endTime - startTime;
38 
39  System.out.println("Correct count is " + correctCount
40    + "\nTest time is " + testTime / 1000 + " seconds\n" + output);
41 }
42}
43