蔡庭豪

1. import java.util.Scanner;
   
2. 
   
3. 
   
4. public class JPA01 {
   
5.    
   
6. public static void main(String args[]){
   
7.          Scanner scanner =new Scanner(System.in);
   
8.          System.out.println("詩入第1組的x和y的座標");
   
9.          float x1 = scanner.nextFloat();
   
10.          float y1 = scanner.nextFloat();
    
11.          System.out.println("詩入第2組的x和y的座標");
    
12.          float x2 = scanner.nextFloat();
    
13.          float y2 = scanner.nextFloat();
    
14.          float xfar =x1-x2;
    
15.          float yfar =y1-y2;
    
16.          double far1 =Math.pow(xfar, 2)+Math.pow(yfar, 2) ;
    
17.          double far2=Math.sqrt(far1);
    
18.          System.out.printf("介於(%.2f,%.2f)和(%.2f,%.2f)之間的距離是%.2f",x1,y1,x2,y2,far2);
    
19. }
    
20. }

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