.NET深入 c#数据类型2

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SL1
{
    class Program
    {
        public struct Student
        {
            public int _id;
            public int _age;
            public void Show()
            {
                Console.WriteLine("ID:{0}\n年龄:{1}", _id, _age);
            }
        }
        static void Main(string[] args)
        {
            Student stu;
            stu._id = ;
            stu._age = ;
            stu.Show();

            //int[] infozhang = new int[] { 170, 60 };
            //int[] infoLi = new int[2];
            //Console.WriteLine("复制前-----李明德身高为:" + infozhang[0] + "体重是:" + infoLi[1]);
            //for (int i = 0; i < infozhang.Length;i++ )
            //{
            //    infoLi[i] = infozhang[i];
            //}
            //Console.WriteLine("去年张浩的身高为:" + infozhang[0] + "体重是:" + infozhang[1] + ",李明的身高为:" + infoLi[0] + "体重是:" + infoLi[1]);
            //infoLi[0] = 180;
            //infoLi[1] = 70;
            //Console.WriteLine("今年张浩的身高为:" + infozhang[0] + "体重是:" + infozhang[1] + ",李明的身高为:" + infoLi[0] + "体重是:" + infoLi[1]);

            //int[] infozhang = new int[] { 170,60};
            //int[] infoLi = infozhang;
            //Console.WriteLine("去年张浩的身高为:"+infozhang [0]+"体重是:"+infozhang [1]+",李明的身高为:"+infoLi[0]+"体重是:"+infoLi[1]);
            //infoLi [0]=180;
            //infozhang[1] = 70;
            //Console.WriteLine("今年张浩的身高为:" + infozhang[0] + "体重是:" + infozhang[1] + ",李明的身高为:" + infoLi[0] + "体重是:" + infoLi[1]);

            //int heightZhang = 170;
            //int heightli = heightZhang;
            //Console.WriteLine("去年李明的身高为:"+heightli +"去年张浩的身高为:"+heightZhang);
            //heightli = 180;
            //Console.WriteLine("今年李明的身高为:" + heightli + "今年张浩的身高为:" + heightZhang);
            Console.ReadLine();

        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Student
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] points = new int[];
            int[] newpoints = new int[];
            Console.WriteLine("请输入5位会员的积分");
            for (int i = ; i < points.Length; i++)
            {
                Console.Write("第" + (i + ) + "位会员积分:");
                points[i] = Convert.ToInt32(Console.ReadLine());
            }
            for (int i = ; i < points.Length; i++)
            {
                newpoints[i] = points[i];
                newpoints[i] = newpoints[i] + ;
            }
            Console.WriteLine("\n序号  历史积分  新年积分");
            //省略代码循环输出两个年度的积分
            for (int i = ; i < points.Length;i++ )
            {
                Console.WriteLine("{0}\t{1}\t{2}",(i+),points[i] ,newpoints[i]);
            }
            Console.ReadLine();

            //int i = 123;
            //object o = i;
            //i = 456;

            //int i = 123;
            //object o = i;
            //int j=(int)o;
            //Console.WriteLine("值类型的值为:{0}",i);
            //Console.WriteLine("引用类型的值为:{0}",j);
            //Console.ReadLine();

        }
    }
}