How do I end this program?

[jon1902]

I need it to end up like this this below. I need it to end at the width or the height being 0. What can I do to make this happen?

First corner X coordinate:

100

First corner Y coordinate:

100

Second corner X coordinate:

100

Second corner Y coordinate

100

Width:  0  Height: 0   Area: 0



finished

import java.util.Scanner; 

class areasofrectangles

{ 

public static void main (String[] args ) 

{ 

Scanner scan=new Scanner( System.in ); 
int a, b, c, d;
int area, height, width;

System.out.print ("First corner X coordinate: "); 
a = scan.nextInt (); 

while (!( a ==0)) 

{ 

System.out.print ("First corner Y coordinate: "); 
b = scan.nextInt (); 


System.out.print ("Second corner X coordinate: "); 
c = scan.nextInt (); 

System.out.print ("Second corner Y coordinate: "); 
d = scan.nextInt (); 

width = Math.abs(c - a);

height = Math.abs(d - b);

area = width * height;

System.out.println ("Width: " + width + " Height: " + height + " Area: " + area); 

System.out.println (); 

System.out.print ("First X Coordinate: "); 

a = scan.nextInt (); 

} 

System.out.println ("Finished"); 

} 
}