Answer:
Written in Java Programming Language
import java.util.Scanner;
public class Assign{
public static void main(String [] args) {
Scanner stdin = new Scanner(System.in);
int num,sum=0;
System.out.println("Start Inputs: ");
num = stdin.nextInt();
while (num>=0) {
if(num%2== 0)
{
sum+=num;
}
num = stdin.nextInt();
}
System.out.print("Sum of even numbers: "+sum);
}
}
Explanation:
I'll start my explanation from line 4
This line initializes Scanner object stdin
Scanner stdin = new Scanner(System.in);
This line declares necessary variables and initializes sum to 0
int num,sum=0;
This line prompts user for inputs
System.out.println("Start Inputs: ");
This line reads user inputs
num = stdin.nextInt();
This line checks is user input is not negative (It's a loop that will be repeated continually until a negative number is inputted)
while (num>=0) {
This line checks if user input is an even number
if(num%2== 0)
{
If the above condition is true, this line calculates the sum of even numbers
sum+=num;
}
This line prepares the user for next input
num = stdin.nextInt();
}
This line prints the calculated sum of even number; If no even number is inputted, the sum will be 0
System.out.print("Sum of even numbers: "+sum);
