using System;
class Number
{
    public int i;
    public Number(int initval)
    {
        this.i = initval;
    }
    public static Number operator ++(Number arg)
    {
        return new Number(arg.i +1);
    }
}
class test
{
    static void Main()
    {
        Number Obj1 = new Number(1);
        Number Obj2 = Obj1++;
        Console.WriteLine(Obj1.i);
        Console.WriteLine(Obj2.i);
        Obj2 = ++Obj1;
        Console.WriteLine(Obj1.i);
        Console.WriteLine(Obj2.i);
    }
}

上面的代码   this.i = initval; 这里的this 是用作干什么的，我去了this好像也没有错啊