结构体

using  System;
using  System.Collections.Generic;
using  System.Text;

namespace  struct02
... {
    public struct CoOrds
    ...{
        public int x, y;

        public CoOrds(int p1, int p2)
        ...{
            x = p1;
            y = p2;
        }
    }

    class Program
    ...{
        static void Main(string[] args)
        ...{
            CoOrds coords1;

            // 赋值
            coords1.x = 10;
            coords1.y = 20;

            Console.WriteLine(coords1.ToString() + " ");

            //显示:
            System.Console.Write("CoOrds 1: ");
            System.Console.WriteLine("x = {0}, y = {1}", coords1.x, coords1.y);
        }
    }
}

 

 

using  System;
using  System.Collections.Generic;
using  System.Text;

namespace  strctcopy
... {
    //定义一个坐标系
    struct Point
    ...{
        public int X;
        public int Y;

        public Point(int x, int y)
        ...{
            X = x;
            Y = y;
        }
    }

    //定义一个长方形
    struct Rect
    ...{
        public int top, bottom, left, right;

        public Rect(Point topLeft, Point bottomRight)
        ...{
            top = topLeft.Y;
            left = topLeft.X;

            bottom = bottomRight.Y;
            right = bottomRight.X;
        }

        public int Area()
        ...{
            return(bottom-top)*(right-left);
        }
    }

    class Program
    ...{
        static void Main(string[] args)
        ...{
            //演示复制结构变量操作
            Console.WriteLine(" 复制结构变量的实例:  ");

            //使用new关键字声明结构变量
            Point pt = new Point(1,2);
            Point xy = new Point(3,4);

            //复制结构变量
            Console.WriteLine("当前pt结构变量的值是：" + "(" + "{0}" + "," + "{1}" + ")", pt.X, pt.Y);
            pt = xy;
            Console.WriteLine("复制变量后，pt的值是：" + "(" + "{0}" + "," +"{1}" + ")", pt.X,pt.Y);

            Console.WriteLine(" ===================================================================== ");

            //不使用new声明结构变量
            Rect rect01, rect02;

            //对rect01结构变量赋值,构建一个长为3，宽为2的长方形
            rect01.top = 5;
            rect01.left = 2;
            rect01.bottom = 3;
            rect01.right = 5;

            /**/////对rect02结构变量赋值,构建一个长为6，宽为4的长方形
            rect02.top = 8;
            rect02.left = 2;
            rect02.bottom = 4;
            rect02.right = 8;

            //复制结构变量
            rect01 = rect02;
            Console.WriteLine("rect01现在的值是：");
            Console.WriteLine("top = {0}",rect01.top);
            Console.WriteLine("left = {0}",rect01.left);
            Console.WriteLine("bottom = {0}",rect01.bottom);
            Console.WriteLine("right = {0}",rect01.right);
        }
    }
}

复制结构变量的实例:

当前pt结构变量的值是：(1,2)
复制变量后，pt的值是：(3,4)

=====================================================================

rect01现在的值是：
top = 8
left = 2
bottom = 4
right = 8
请按任意键继续. . .