using System;
public class Program
{
public static void Main()
// Input a number
Console.Write("Enter a number: ");
int number = Convert.ToInt32(Console.ReadLine());
// Calculate and display factorial
Console.WriteLine($"Factorial of {number} is: {Factorial(number)}");
}
// Recursive method to calculate factorial
static int Factorial(int n) => n == 0 ? 1 : n * Factorial(n - 1);
