深入探讨C#中的结构struct

        public int X
        {
            get { return x; }
            set { x = value; }
        }
        private int y;

        public int Y
        {
            get { return y; }
            set { y = value; }
        }
        public void Show()
        {
            Console.Write("X={0},Y={1}", this.X, this.Y);
        }
        public Point(int x,int y)
        {
            this.x = x;
            this.y = y;
            this.p = null;
        }
        public Point(int x)
        {
            this.x = x;
            this.y = 11;
            this.p = null;
        }
        public Point(int x, int y, Program p)
        {
            this.x = x;
            this.y = y;
            this.p = p;
        }
    }
    class Program
    {
        public string Name { get; set; }
        static void Main(string[] args)
        {
            //Point p = new Point();
            //p.X = 120;
            //p.Y = 100;
            //Point p1 = p;
            //p1.X = 190;
            //Console.WriteLine(p.X);

            //Point p;
            //p.X = 12;//不赋值就会报错
            //Console.WriteLine(p.X);
            //Point p1 = new Point();
            //Console.WriteLine(p1.X);//此处不赋值不会报错，原因见区别8

            Program p = new Program() { Name="小花"};
            Point point1 = new Point(10, 10, p);
            Point point2 = point1;
            point2.p.Name = "小明";
            Console.WriteLine(point1.p.Name);//结果为小明，分析见下图
        }
    }