java练习---4

//程序员:罗元昊 2017.9.17 今天好累吖咦吖咦吖

package demo;
import java.util.Scanner;
public class Lk {

  public static void main(String[] args) {

    Scanner input = new Scanner(System.in);
    System.out.println("请输入一个0-1000之间的整数");
    int a =(int)input.nextDouble();

    if(a>999||a<0) {
      System.out.println("输入有误");

    }
    else if(a>0 && a<10){
      System.out.println("The sum of the digits is "+ a);
    }
    else if(a>9 && a<100) {
      int b=(a/10) + (a%10);
      System.out.println("The sum of the digits is "+ b);
    }
    else if(a>99 && a<1000) {
      int c=(a/100)+(a%100)+(a%10%10);
      System.out.println("The sum of the digits is "+ c);
    }
  }

}

原文地址:https://www.cnblogs.com/xiaoluohao/p/7537867.html