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//用面向对象多态的思想分别去求圆形和长方形的面积和周长static void Main(string[] args) { Sharp sharp = new Circle(5); double area=sharp.GetArea();... 阅读全文
posted @ 2015-08-05 16:28
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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace 抽象类{ class Program { ... 阅读全文
posted @ 2015-08-05 15:30
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