Answer:
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;
}
}
Answer:
The Basic Program is as follows:
10 LENGTH = 50
15 WIDTH = 30
20 AREA = WIDTH * LENGTH
25 PRINT AREA
30 END
The Algorithm is as follows:
1. Start
2. Let Length = 50
3. Let Width = 30
4. Compute Area = Length * Width
5. Display Area
6. Stop
See Attachment for flowchart (flowchart is designed using draw io tools)
Explanation:
The flowchart, algorithm and basic program all follow the same sequence and explanation
Using the basic program as a case study;
Line number 10: The program starts by initializing LENGTH to 50
Line number 15: It then initializes WIDTH to 30
Line number 20: The AREA is calculated by LENGTH * WIDTH
Line number 25: The value of AREA is printed afterwards
Line number 30: Lastly, the program stops execution
A writer maybe, because you can work by yourself, even at home.