继承多态以及运算符重载

Question

2.点类到圆到球体的派送如何进行
3.抽象方法如何实现
4.数组对于不同类型对象如何统一存储

Answer 1

2

using System;
namespace ConsoleApp2
{
    public class Point
    {
        public int X { get; set; }
        public int Y { get; set; }
    }
    public class Circle : Point
    {
        public int R { get;set;}
        public double Area()
        {
            return Math.PI * Math.Pow(R, 2);
        }
        public double Length()
        {
            return 2 * Math.PI * R;
        }

    }
    public class Global : Circle
    {
        public double Volume()
        {
            return (4 / 3) * Math.PI * Math.Pow(R, 3);
        }
        public new double Area()
        {

            return 4*Math.PI * Math.Pow(R, 2);
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            var c = new Circle { R = 4 };
            Console.WriteLine(c.Area());
            var g = new Global { R = 4 };
            Console.WriteLine(g.Area());
            Console.WriteLine(g.Volume());
            Console.ReadLine();
        }
    }
}