作业2.6-2.15 两次作业

2.6 

求一整数个位数之和

import java.util.Scanner;
public class NumberSum
{
     public static void main(String[] args)
   {
      int a,b,c,sum=0;
      Scanner input =new Scanner(System.in);
      System.out.print("Enter a number between 0 and 1000:");
      int number=input.nextInt();
      a=number/100;
      b=(number%100)/10;
      c=(number%100)%10;
      sum=a+b+c;
      System.out.println("The sum of the digits is"+" "+sum);
  
   }
}

 

 

2.15

 

两点之间的距离

import java.util.Scanner;

public class P {

  public static void main(String[]  args){

    Scanner input=new Scanner(System.in);


    System.out.print(“Enter x1 and y1:");
    double x1=input.nextDouble();
    double y1=input.nextDouble();


    System.out.print(“Enter  x2 and y2:”)
    double x2=input.next0ouble();
    double y2=input.nextDouble();
    double a=Math.pow(x2-x1,  2)+Math.pow(y2-y1,2);
    double distance=Math.pow(a,0.5);


    System.out.println(”The distance of the two points is  ”十distance);
  }
}
 

 

posted on 2017-09-18 11:33  kally1004  阅读(90)  评论(0编辑  收藏  举报

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