Exercise01_09

 1 public class S{
 2 public static void main(String[] args){
 3 double w=4.5;
 4 double h=7.9;
 5 double d;
 6 double s;
 7 d=2*(w+h);
 8 s=w*h;
 9 System.out.println("面积为:" + s);
10 System.out.println("周长为:" + d);
11 }
12 }
原文地址:https://www.cnblogs.com/cherrydream/p/9799221.html