i am trying to make a program which display the sum of numbers only if user write a positive number using only while loop

Question

the program take any number of numbers from the user and store the sum of them and display the sum only if the user enter a negative number

in my case
the output is the sum but added to the negative number

https://onlinegdb.com/G6FMvUN70

Answer 1

int sum = 0;
Scanner sc = new Scanner(System.in);
input = sc.nextInt();
while (input>=0) {
sum += input;
input = sc.nextInt();
}
System.out.println(sum);

Answer 2

i found the bug

and here's the right code

https://onlinegdb.com/PqU6Vu4Zb