用java语言编写:计算并输出一个整数各位数字之和？？比如4321，得出10。

个回答

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);

0
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
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
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;
}

0

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);

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