c#指针用法示例。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace ConsoleApplication1
{
    struct CoOrds
    {
        public int x;
        public int y;
    }
    class Program
    {

        static void Main(string[] args)
        {
            Console.WriteLine("************************************************************");

            CoOrds home;
            unsafe
            {
                CoOrds* p = &home;
                p->x = 25;
                p->y = 12;
                System.Console.WriteLine("The coordinates are: x={0}, y={1}", p->x, p->y);

                Console.ReadKey();
            }
        }
    }
}

　　编译时需要将项目属性中生成的允许不安全代码勾上。