class Program
{
static void Main(string[] args)
{
Console.Write("请输入要进行阶乘的数:");
int Number = int.Parse(Console.ReadLine());
int Next = Strfanz(Number);
Console.WriteLine("{0}的阶乘为:{1}:",Number,Next);
}
static int Strfanz(int str)
{
if (str == 1) return 1;
int MyNumber = str * Strfanz(str-1);
return MyNumber;
}
}