Question

using java

LO: (Analyze) Students will fix a loop that runs forever.

This program runs the countdown sequence for a rocket launch. However, it seems to loop infinitely. Fix the program so it counts down and terminates properly.

starter code :

import java.util.Scanner;

/*
* Counts down to a blastoff, starting from a given number.
*/
public class Countdown {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       int countdown = 0;
       countdown = sc.nextInt();
      
       while (countdown != 0) {
           System.out.println(countdown + "...");
           countdown--;
       }
       System.out.println("Blast off!");
       System.exit(0);
   }
}

Answer 1

import java.util.Scanner;

/*
* Counts down to a blastoff, starting from a given number.
*/
public class Countdown {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       int countdown = 0;
       countdown = sc.nextInt();
      
       while (countdown > 0) {
           System.out.println(countdown + "...");
           countdown--;
       }
       System.out.println("Blast off!");
       System.exit(0);
   }
}