CODE: import java.util.*; public class test { public static void main(String args[]) { int num, sum=0; Scanner input=new Scanner(System.in); System.out.print(\"Input num : \"); num=input.nextInt(); while(num != 13) { sum=sum+num; System.out.print(\"Input num : \"); num=input.nextInt(); } sum=sum+num; System.out.println(\"Sum = \"+sum); } } save the above file as test.java Output: javac test.java java test Input num : 1 Input num : 2 Input num : 3 Input num : 4 Input num : 5 Input num : 6 Input num : 7 Input num : 8 Input num : 9 Input num : 0 Input num : 13 Sum = 58 Solution CODE: import java.util.*; public class test { public static void main(String args[]) { int num, sum=0; Scanner input=new Scanner(System.in); System.out.print(\"Input num : \"); num=input.nextInt(); while(num != 13) { sum=sum+num; System.out.print(\"Input num : \"); num=input.nextInt(); } sum=sum+num; System.out.println(\"Sum = \"+sum); } } save the above file as test.java Output: javac test.java java test Input num : 1 Input num : 2 Input num : 3 Input num : 4 Input num : 5 Input num : 6 Input num : 7 Input num : 8 Input num : 9 Input num : 0 Input num : 13 Sum = 58.