i++、++i 、i--、--i

总结：

i++ 先用后加，

++i先加后用；

i--先用后减，

--i先减后用；

        //int i = 1;
        //Console.WriteLine(i);//1
        //Console.WriteLine("i++={0}", i++); //1
        //Console.WriteLine(i);//2

        //int j = 1;
        //Console.WriteLine(j);//1
        //Console.WriteLine("++j={0}", ++j); //2
        //Console.WriteLine(j);//2

        int i = 1;
        Console.WriteLine(i);//1
        Console.WriteLine("i--={0}", i--); //1
        Console.WriteLine(i);//0

        int j = 1;
        Console.WriteLine(j);//1
        Console.WriteLine("--j={0}", --j); //0
        Console.WriteLine(j);//0

　　　　  //++、--的优先级大于+、-
        //int k = 1;
        //int k2 = 1 + --k;
        //Console.WriteLine(k2);//1

        Console.ReadKey();