C#用递归求阶乘 n！

C#用递归方式求阶乘

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 弟子规
{
class Program
{
public static double recursion(int n)
{
return (n==1?1:n * recursion(n - 1));
}
static void Main(string[] args)
{
Console.Write(recursion(6));
}
}
}