题解 | #判断体重指数#

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    double height = scanner.nextDouble();
    double weight = scanner.nextDouble();

    //write your code here......
    double log = weight/(height*height);
    if(log<18.5){
        System.out.println("偏瘦");
    }else if(log>=18.5&&log<20.9){
        System.out.println("苗条");
    }else if(log>=20.9&&log<24.9){
        System.out.println("适中");
    }else{
        System.out.println("偏胖");
    }

}

}

用if来判断就好了,没啥难的