Write an expression that executes the loop body as long as the user enters a non-negative number. 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.

while (Num>=0) {

System. out. println ("enter a another number");

Num = in. nextInt ();

}

Explanation:

The complete java code prompting a user to enter a number until a negative number is entered is given below:

import java. util. Scanner;

public class num6 {

public static void main (String [] args) {

Scanner in = new Scanner (System. in);

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

int Num = in. nextInt ();

while (Num>=0) {

System. out. println ("enter a another number");

Num = in. nextInt ();

}

System. out. println ("Done.");

return;

}

}