问题 1019: C语言程序设计教程（第三版）课后习题6.9

import java.util.Scanner;

public class Prog1019 {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

double n = scan.nextDouble();

double m = scan.nextDouble();

double n1 = n;

double length = 0;

while (m != 0) {

length += n;

n /= 2;

m--;

}

double dd = length * 2 - n1;

String s2 = String.format("%.2f", n);

String s3 = String.format("%.2f", dd);

System.out.print(s2 + " " + s3);

}

}