Java学习小练习

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 weight = sc.nextDouble();

if(weight<=20.0f){

    double cost=weight*1.68;

    System.out.printf("%.2f",cost);

}else if(weight>20.0f){

    double cost=weight*1.98;

    System.out.printf("%.2f",cost);

}

}

}