摘要:
import java.lang.Math; public class C{ private double radius; C(double r){ this.radius = r; } public double areaCal(){ return Math.PI*this.radius*this 阅读全文
posted @ 2017-09-11 12:29 打得不错 阅读(185) 评论(1) 推荐(0)
posted @ 2017-09-11 12:29 打得不错 阅读(185) 评论(1) 推荐(0)