C语言程序设计教程（第三版）课后习题6.9 （Java代码）

解题思路:

注意事项:

参考代码:

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

double m = sc.nextDouble();

double s = 0;

int n = sc.nextInt();

for (int i = 0; i < n; i++) {

if (i == 0)

s = m;

else

s += 2 * m;

m *= 0.5;

}

System.out.printf("%.2f", m);

System.out.printf(" ");

System.out.printf("%.2f", s);

}

}