java语言程序设计(基础篇)第十版编程练习题[2.15]

(几何：两点间距离）编写程序，提示用户输人两个点(x1, y1) 和(x2, y2), 然后显示两点间的距离。计算两点间距离的公式是：

注 意：可 以 使 用 Math . pow(a ,0.5)来计算。

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package dome2_15;

import java.util.Scanner;

/**
 *
 * @author Administrator
 */
public class Dome2_15 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner in = new Scanner(System.in);
        System.out.println("Enter xl and yl: ");
        double x1 = in.nextDouble();
        double y1 = in.nextDouble();
        System.out.println("Enter x2 and y2: ");
        double x2 = in.nextDouble();
        double y2 = in.nextDouble();
        double distance = Math.pow(Math.pow((x2 - x1), 2)+Math.pow((y2 - y1), 2),0.5);
        System.out.println("The distance between the two points is " + distance);
    }
    
}