运算符(code)

 static void Main(string[] args)
{
            /*--递增/递减--*/
            int i = 1;
            //i++表达式计算之后才递增。++i表达式计算之前就递增
            Console.WriteLine(i++);
            Console.WriteLine(++i);
            Console.WriteLine("{0}{1}", i--, ++i);//值来自于第2个console的I的值
            Console.ReadLine();

            /*--大部分的运算符不能在对象中运行--*/
            object obj1, obj2;
            int i = 1, j = 2;
            obj1 = (object)i;
            obj2 = (object)j;

            Console.WriteLine(obj1 + obj2);
             //错误 1 运算符“+”无法应用于“object”和“object”类型的操作数 E:\wsb\10_09_03\10_09_03\Program.cs 17 31 10_09_03      
           /*--输出0到100的奇数--*/
            //第一种方法
            int i;

            for (i = 0; i < 100; i++)
            {
                if (i % 2 != 0)
                {
                    Console.WriteLine("{0}", i);
                }

            }


           //第二种方法
              for (int i = 0; i < 100; i++)
            {
                Console.WriteLine("{0}", i+1);
                i++;
            }
}