import javax.swing.JOptionPane;//用Joption所需要做的前置作業


public class BMI {
public static void main(String[] args) {
String s = JOptionPane.showInputDialog("身高:");
// System.out.println(s);
int iheight = Integer.parseInt(s);
float h = iheight / 100f;
s = JOptionPane.showInputDialog("體重:");
float w = Float.parseFloat(s);
float bmi = w / (h * h) ;
//四捨五入
bmi = ((int)((bmi+0.005f)*100))/100f;//裡面有括號的INT可以把他右邊的變數變成整數變數
System.out.println(bmi);
JOptionPane.showMessageDialog(null, "您的BMI值為:"+bmi);
if (bmi < 16){
System.out.println("多吃點");
}else if (bmi > 24)
System.out.println("少吃點");
else
System.out.println("正常");
}

}