*2.14（健康应用：计算BMI）身体质量指数（BMI）是对体重的健康测量。它的值可以通过将体重（以千克为单位）除以身高（以米为单位）的平方得到。编写程序，提示用户输入体重（以磅为单位）以及身高（以英寸为单位），然后显示BMI。注意：1磅是0.45359237千克，1英寸是0.0254米。 下面是一个运行示例： Enter weight in pounds : 95.5 Enter height in inches : 50 BMI is 26.8573
*2.14(Health application: computing BMI) Body Mass Index (BMI) is a measure of health on weight. It can be calculated by taking your weight in kilograms and dividing by the square of your height in meters. Write a program that prompts the user to enter a weight in pounds and height in inches and displays the BMI. Note one pound is 0.45359237 kilograms and one inch is 0.0254 meters. Here is a sample run: Enter weight in pounds : 95.5 Enter height in inches : 50 BMI is 26.8573
参考代码：
package chapter02; import java.util.Scanner; public class Code_14 { public static void main(String[] args) { double Pounds,Inches,Kilograms,Meters,BMI; System.out.print("Enter weight in pounds : "); Scanner PoundInput = new Scanner(System.in); Pounds = PoundInput.nextDouble(); System.out.print("Enter height in inches : "); Scanner InchInput = new Scanner(System.in); Inches = InchInput.nextDouble(); Kilograms = Pounds * 0.45359237; Meters = Inches * 0.0254; BMI = Kilograms / Math.pow(Meters, 2); System.out.println("BMI is " + BMI); } } 结果显示： Enter weight in pounds : 95.5 Enter height in inches : 50 BMI is 26.857257942215885 Process finished with exit code 0