Question

Java Programming

Write a program that will help a student learn multiplication. Use SecureRandom object to produce two positive integers between 1 and 20. The program should then prompt the user with a question (use a sentinel-controlled loop), such as: How much is 10 times 11? The student then inputs the answer. If the answer is correct display the message “very good” and ask another question. If the answer is wrong to display the message “no, please try again” and let the student try the same question until the student finally gets it right.

Answer 1

import java.security.SecureRandom;
import java.util.Scanner;

public class MathQuestion {
   public static void main(String[] args) {
       SecureRandom r = new SecureRandom();
       String ch="y";
       Scanner sc = new Scanner(System.in);
       while(ch.equalsIgnoreCase("y")) {
           int n1=Math.abs(r.nextInt()%20+1);
           int n2=Math.abs(r.nextInt()%20+1);
           int res=n1 * n2;
           int answer;
           System.out.println("How much is "+n1+" times "+n2+"?");
           do {
               answer=sc.nextInt();
               if(answer!=res)
                   System.out.println("no,try again");
               else
                   System.out.println("very good");
           }while(res!=answer);
           System.out.println("DO you want try another question (y/n) ?");
           ch=sc.next();
       }
       System.out.println("Bye....!!!");
   }
}

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