6回答

• 

  慕UI4477556

  2017-06-28 11:14:06

  已采纳

  int num = 4321;    // 整数

  int a = num;

  int sum = 0;   // 数字之和

  while( a != 0 ){

      sum += a%10;
  

      a /= 10;
  

  }

  System.out.print(sum);
  

  
  

  1 0

  慕粉2247...

  谢谢~

  2017-06-28 11:29:21

  共 1 条回复 >

• 

  WhaleFall98k

  2018-03-15 20:56:41

  import java.util.*;
  public class ZhengShu{
    private final static Scanner scanner=new Scanner(System.in);
    public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
  int num = scanner.nextInt();
   System.out.println("请输入一个整数："+num);
  while((num/10)!=0){
      sum+=num%10;
      num=num/10;
  }
  sum+=num;
  System.out.print("各位数字的和为："+sum);
     scanner.close();
    }
  }

  0 0
• 

  慕斯4356183

  2017-06-28 14:40:05

  import java.util.Scanner; 

  public class dmo {

  public static void main(String[]args){

  Scanner scanner=new Scanner(System.in); 

  System.out.println("请输入整数：");

  int num=scanner.nextInt();

  int sum=num%10;//获取个位

  for(int i=10;;){

   if(num<10){

   break;

   }else if(num/i==0){

            break;

             }else{

            sum+=num%(i*10)/i;//获取各位的数字

             }

               i*=10;

  }  

  System.out.println("各个位数之和为："+sum);

  }

  }

  
  

  0 0
• 

  wcly

  2017-06-28 11:28:04

  public int numAdd(int num){
  

      int sum = 0;
  

      while(num/10 != 0){

          sum+=num%10;
  

          num=num/10;
  

      }

      sum+=num;
  

      return sum;
  

  }

  1 0

  慕粉2247...

  多谢~

  2017-06-28 11:29:31

  共 1 条回复 >

• 

  Rukid

  2017-06-28 11:17:42

  Scanner sc = new Scanner(System.in);
  int num = sc.nextInt();
  while((num/10)!=10){
      sum+=num%10;
      num=num/10;
  }
  sum+=num; //最后还有num的个位数要加
  System.out.print("各位数字的和为："+sum);

  
  

  3 0

  慕粉2247...

  谢谢谢谢?

  2017-06-28 11:29:08

  共 3 条回复 >

• 

  慕勒4346190

  2017-06-28 11:09:55

  System.out.println("合为"+(num%10+num/10%10+num/100%10+num/1000));

  0 0