/**
 *  Name: Erica Eddy
 *  Course: CSCI 241 - Computer Science I
 *  Section: 001 or 002
 *  Assignment: 1
 *  
 *  This example shows how to take a while loop and turn it into a do-while
 *  loop.  The key is that the body of a do-while loop will always execute
 *  at least once, even if the condition starts out as false.
 * 
 *  We also see how to write an equivalent while loop, given a do-while loop.
 *  The key is that we must include the loop body outside of checking the
 *  condition to make sure that code executes at least once.
 */
import java.util.*;

public class WhileDoWhile
{
    public static void main (String [] args)
    {
        int x;
        Scanner input = new Scanner(System.in);
    
        // priming read (to get an initial value for x)
        System.out.print("Enter value for x (4 or lower): ");
        x = input.nextInt();

        while (x > 4)   {
            System.out.print("Enter value for x (4 or lower): ");
            x = input.nextInt();
        }

        // equivalent do-while
        x = 2;
        do  {
            System.out.print("Enter value for x: ");
            x = input.nextInt();
        } while (x > 4);
        
            
        
//new do-while
        
//Here is a do-while which will print "CS-241" one time only
//when x = 0.  Try other initial values for x in these loops to
//see what happens.
        x = 0;
        do  {
            System.out.println("CS-241");
            x = x - 1;
        } while (x > 0);
        
        // Print a blank line to separate loop output
        System.out.println("---------");
        
        // this while loop will never have its body executed
        x = 0;
        while (x > 0)   {
            System.out.println("CS-241");
            x = x - 1;
        }
//         
        // Print a blank line to separate loop output
        System.out.println("---------");
        
        // this is a direct translation of the do-while loop;
        // it repeats the body code outside of checking the loop condition
        x = 0;
        System.out.println("CS-241");
        x = x - 1;
        while (x > 0)   {
            System.out.println("CS-241");
            x = x - 1;
       }
    }
}