题解 | #简单运算#

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......
    //"闭"含端点、"开"不含端点
    double bmi = weight / (height * height);
    /*
    if (bmi < 18.5){
        System.out.println("偏瘦");
    }else if (bmi >= 18.5 && bmi < 20.9){
        System.out.println("苗条");
    }else if (bmi >= 20.9 && bmi <= 24.9){
        System.out.println("适中");
    }else if (bmi > 24.9){
        System.out.println("偏胖");
    }
    */
    //更简洁的思路
    if(bmi > 24.9){
        System.out.println("偏胖");
        //return可以加也可以不加
        //return;
    }else if(bmi >= 20.9){ //能执行到这里说明bmi已经小于或者等于24.9了
        System.out.println("适中");
        //return;
    }else if (bmi >= 18.5){
        System.out.println("苗条");
        //return;
    }else{
        System.out.println("偏瘦");
    }

}

}