3.10 (Game: addition quiz) Listing 3.3, SubtractionQuiz.java, randomly generates a
subtraction question. Revise the program to randomly generate an addition question
with two integers less than 100.
import java.util.Scanner; public class ProgrammingEx3_10 { public static void main(String[] args) { // 1. Generate two random single-digit integers int number1 = (int)(Math.random() * 100); int number2 = (int)(Math.random() * 100); // 2. If number1 < number2, swap number1 with number2 if (number1 < number2) { int temp = number1; number1 = number2; number2 = temp; } // 3. Prompt the student to answer “what is number1 – number2?” System.out.print ("What is " + number1 + " - " + number2 + "? "); Scanner input = new Scanner(System.in); int answer = input.nextInt(); // 4. Grade the answer and display the result if (number1 - number2 == answer) System.out.println("You are correct!"); else System.out.println("Your answer is wrong.\n" + number1 + " - " + number2 + " should be " + (number1 - number2)); } }
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