Question

4.2.3: Basic while loop expression.

Write a while loop that prints userNum divided by 4 (integer division) until reaching 2. Follow each number by a space. Example output for userNum = 160:

40 10 2 

Note: These activities may test code with different test values. This activity will perform four tests, with userNum = 160, then with userNum = 8, 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 "Programend never reached." The system doesn't print the test case that caused the reported message.

#include <iostream>
using namespace std;

int main() {
int userNum;

cin >> userNum;

/* Your solution goes here */

cout << endl;

return 0;
}

Answer 1

#include <iostream>
using namespace std;

int main() {
    int userNum;
    cin >> userNum;

    if(userNum > 1) {
        userNum /= 4;
        while(userNum >= 2) {
            cout << userNum << " ";
            userNum /= 4;
        }
    }

    cout << endl;
    return 0;
}