4.2.3: Basic while loop expression. Write a while loop that prints userNum divided by 2 (integer division) until reaching 1. Follow each number by a space. Example output for userNum = 40: 20 10 5 2 1 Note: These activities may test code with different test values. This activity will perform four tests, with userNum = 40, then with userNum = 2, then with userNum = 0, then with userNum = - 1. See "How to Use zyBooks". Also note: If the submitted code has an infinite loop, the system will stop running the code after a few seconds, and report "Program end never reached." The system doesn't print the test case that caused the reported message.

Question

Computers and Technology

Eli Jenkins

11 May, 11:56

4.2.3: Basic while loop expression. Write a while loop that prints userNum divided by 2 (integer division) until reaching 1. Follow each number by a space. Example output for userNum = 40: 20 10 5 2 1 Note: These activities may test code with different test values. This activity will perform four tests, with userNum = 40, then with userNum = 2, then with userNum = 0, then with userNum = - 1. See "How to Use zyBooks". Also note: If the submitted code has an infinite loop, the system will stop running the code after a few seconds, and report "Program end never reached." The system doesn't print the test case that caused the reported message.

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Answers (1)

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Anabel · Answer 1

import java. io.*;

import java. util. Scanner;

class divide {

public static void main (String[] args) {

Scanner num=new Scanner (System. in); //scanner object.

int userNum=num. nextInt ();

while (userNum>1) / /while loop.

{

userNum/=2; //dividing the userNum.

System. out. print (userNum+" "); //printing the userNum.

}

}

}

Input:-

40

Output:-

20 10 5 2 1

Input:-

2

Output:-

1

Input:-

0

Output:-

No Output

Input:-

-1

Output:-

No Output.

Explanation:

In the program While loop is used. In the while loop it divides the userNum by 2 in each iteration and prints the value of userNum. The inputs and corresponding outputs are written in the answer.