第一节 8变量赋值

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
/* 赋值运符=,让左边变量的值等于右边的计算结果，这就能解释令人不解的i = i+1;
 * (*)+=,-=, *= /=
 * i2 = i1++; i2=++i1; 
 *
 */
namespace 赋值运算
{
    class Program
    {
        static void Main(string[] args)
        {
            //习题: int a = 10; a++; a=a+a; 
            //Console.WriteLine("{0}",a);执行结果是什么
            //22
            int a = 10;
            a++;
            a = a + a;
            Console.WriteLine("a的值为{0}",a);//22

            int i = 10;
            int j = i;
            i = 5;
            Console.WriteLine("j={0}",j); //10

            //int x=10; x+y=80; console.WriteLine(y);这里只能通过地算得到y的值，


            //交换两个变量的值
            int a1=11, a2=22;
            Console.WriteLine("a1的值为:{0},a2的值为:{1}",a1,a2);
            int atext = a1;
            a1 = a2;
            a2 = atext;
            Console.WriteLine("交换过后的值为:");
            Console.WriteLine("a1的值为:{0},a2的值为:{1}", a1, a2);




            Console.ReadKey();
        }
    }
}