题解 | #数位之和#

public class Main{
    public static void main(String[]args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int sum=0;
        while(a!=0){
            sum = sum+a%10;
            a = a/10;
        }
        
        System.out.printf("%d\n",sum);
        
    }//main
}//Main