Answer Posted / dharmendra nonia

using System;
class Factorial
{
public static void accept()
{
double a;
Console.WriteLine("Enter ur Number:");
a=Double.Parse(Console.ReadLine());
double res=fac(a);
Console.WriteLine(res);
}
public static double fac(double d)
{
if (d == 1)
return 1;
else
return d * fac(d - 1);
}
public static void Main()
{
accept();
Console.Read();
}
}

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