标签:
结构可用来表示二维,三维数据。
枚举表示有限数据结合。
他们都是值类型
结构struct
using System; struct Point { public double x, y; public Point(int x, int y) { this.x = x; this.y = y; } public double R(){ return Math.Sqrt(x*x+y*y); } } class Test { static void Main() { Point[] points = new Point[100]; for (int i = 0; i < 100; i++) points[i] = new Point(i, i*i); } }
枚举 enum
using System; enum LightColor { Red, Yellow, Green } class TrafficLight { public static void WhatInfo(LightColor color) { switch(color) { case LightColor.Red: Console.WriteLine( "Stop!" ); break; case LightColor.Yellow: Console.WriteLine( "Warning!" ); break; case LightColor.Green: Console.WriteLine( "Go!" ); break; default: break; } } } class Test { static void Main() { LightColor c = LightColor.Red; Console.WriteLine( c.ToString() ); TrafficLight.WhatInfo( c ); } }
标签:
原文地址:http://www.cnblogs.com/CandiceW/p/4231470.html