Question

5.4.2: While loop: Print 1 to N. Write a while loop that prints from 1 to user_num, increasing by 1 each time. Sample output with input: 4 1 2 3 4

Answer 1

Answer:

import java.util.Scanner;

class Main {

 public static void main(String[] args) {

   Scanner in = new Scanner(System.in);

   System.out.println("Enter a number");

   int user_num = in.nextInt();

   int n = 1;

   while(n <= user_num){

     System.out.print(n+" ");

     n++;

   }

 }

}

Explanation:

• Import Scanner to receive user number
• Create and initalize a new variable (n) to be printed out
• Set the while condition to while(n <= user_num)
• Print the value of n after each iteration and increment n by 1