求解……才玩几天，最简单的东西都写不好

static void Main(string[] args)
        {
            int a = 0;
            int b = 0;
            int c = 0;
            Console.WriteLine();
            for (; a<=8;a++);
            {
                for (; c<a;c=c+1 )
                {
                    for (; b<c; b++)
                    {
                        Console.Write("* ");                    
                    }
                    Console.WriteLine();
                    b = 0;
                }
                c = 0;
            }
            Console.Write("A="+a);
            Console.Write("    B=" + b);
            Console.WriteLine("    C=" + c);
            for (a--; a<0; a--) ;
            {
                for (c=a; c>0; c--)
                {
                    for (b=c; b>0; b--)
                    {
                        Console.Write("* ");
                    }
                    Console.WriteLine();
                }
            }
            Console.WriteLine();
            Console.WriteLine("终于成功打出一串星星 ^_^  ");
            Console.WriteLine("妈B的错了好多次");
            Console.ReadLine();

求解：第二个for大循环中，要a<0(假)才执行循环体？a>0直接跳出？

[此贴子已经被作者于2020-7-31 11:24编辑过]