Question

Java language

Part IV. Write programs (15 pts each) rite a program that generates a random question of adding or subtracting two integers number and number2 under 20 (numbernumber2 in the case of subtraction) and prompt the user to enter the answer. After the user types the answer in the console, the program displays a message to indicate whether the answer is correct and gives the solution if the answer is wrong. Two sample runs are shown below. Tip: generat question. te a random number (0 or 1) to decide generating an addition question or a subtraction What is 18-9? 7 You are wrong. The answer is 9 What is 12+13? 25 You are right. Good job!

Answer 1

import java.util.Random;
import java.util.Scanner;

public class RandomMathQuestion {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        Random random = new Random();
        int n1, n2, result, answer;
        n1 = random.nextInt(20);
        n2 = random.nextInt(20);
        if(random.nextInt(2) == 0) {
            while (n2 > n1) {
                n2 = random.nextInt(20);
            }
            result = n1-n2;
            System.out.print("What is " + n1 + "-" + n2 + "? ");
        } else {
            result = n1+n2;
            System.out.print("What is " + n1 + "+" + n2 + "? ");
        }
        answer = in.nextInt();
        if(answer == result) {
            System.out.println("You are right. Good job!");
        } else {
            System.out.println("You are wrong. The answer is " + result);
        }
    }

}

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