Enter an integer with any number of bits, and output the sum of each bit of the number. For example: 1234 – > 10

Code ：

package com.homework;
import java.util.Scanner;

public class Bit_Sum { 
    

	public static void main(String[] args) { 
    
		// TODO Auto-generated method stub
		Scanner input = new Scanner(System.in);
		System.out.print(" Enter an integer with any number of digits ：");
		long num = input.nextLong();
		long a=0;
		while(num>0) { 
    
			a += num%10;
			num /= 10;
		}
		System.out.print(" Sum of each digit of the number :"+a);
	}

}

Running results ：