用java語(yǔ)言編寫(xiě):計(jì)算并輸出一個(gè)整數(shù)各位數(shù)字之和？？比如4321，得出10。
變量和運(yùn)算符綜合應(yīng)用。
慕粉2247096642
2017-06-28
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2017-06-28
int num = 4321;????// 整數(shù)
int a = num;
int sum = 0; ? // 數(shù)字之和
while( a != 0 ){
????sum += a%10;
????a /= 10;
}
System.out.print(sum);
2018-03-15
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("請(qǐng)輸入一個(gè)整數(shù)："+num);
while((num/10)!=0){
????sum+=num%10;
????num=num/10;
}
sum+=num;
System.out.print("各位數(shù)字的和為："+sum);
?? scanner.close();
? }
}
2017-06-28
import java.util.Scanner;?
public class dmo {
public static void main(String[]args){
Scanner scanner=new Scanner(System.in);?
System.out.println("請(qǐng)輸入整數(shù)：");
int num=scanner.nextInt();
int sum=num%10;//獲取個(gè)位
for(int i=10;;){
?if(num<10){
?break;
?}else if(num/i==0){
? ? ? ? ? break;
? ? ? ? ? ?}else{
? ? ? ? ? sum+=num%(i*10)/i;//獲取各位的數(shù)字
? ? ? ? ? ?}
? ? ? ? ? ? ?i*=10;
} ?
System.out.println("各個(gè)位數(shù)之和為："+sum);
}
}
2017-06-28
public int numAdd(int num){
????int sum = 0;
? ? while(num/10 != 0){
????????sum+=num%10;
????????num=num/10;
????}
????sum+=num;
????return sum;
}
2017-06-28
Scanner?sc?=?new?Scanner(System.in); int?num?=?sc.nextInt(); while((num/10)!=10){ ????sum+=num%10; ????num=num/10; } sum+=num;?//最后還有num的個(gè)位數(shù)要加 System.out.print("各位數(shù)字的和為："+sum);2017-06-28
System.out.println("合為"+(num%10+num/10%10+num/100%10+num/1000));