c# 兔子问题

for (int j = 0; j < 100; j++)
            {
               //兔子问题；输入月数，输出成兔，小兔，幼兔对数，以及兔总对数
                int x=0, y=0, z=1,t=1;//x,y,z分别是成兔，小兔，幼兔对数；t是总对数
                Console.WriteLine("请输入月数:");
                int m = Convert.ToInt32(Console.ReadLine());
                for (int i = 0; i < m; i++)
                {
                    if (i>0)
                    {
                        x = x + y;//本月的成兔=上月的成兔+上月的小兔
                        y = z;//本月的小兔=上月的幼兔
                        z = x;//本月的幼兔=本月的成兔
                    }
                   
                }
                t = x+y+z;//总兔对数
                Console.WriteLine(m+"个月后，总共有"+t+"对兔子；");
                Console.WriteLine( x + "对成兔；");
                Console.WriteLine( y + "对小兔；");
                Console.WriteLine( z + "对幼兔；");

Console.ReadKey();

}