using System;

public class Program

{

    public static void Main()

    {

            /*     int count = 0;  

            for (int i = 1; i <=17; i++)  

            {  

                if (17 % i == 0)  

                {  

                    count++;  

                }  

            }  

            if (count == 2)  

            {  

                    Console.WriteLine(" Prime number");  

                }  

            else  

            {  

                Console.WriteLine(" Is not Prime number");  

            }  

            Console.ReadLine();  

                       int a,b,i,c,n,j;      

       for(i=1; i<=5; i++)      

       {      

        a=0;      

        b=1;      

        Console.Write(b+"\t");     

        for(j=1; j<i; j++)      

        {      

         c=a+b;      

         Console.Write(c+"\t");      

         a=b;  

         b=c;  

        }      

        Console.Write("\n");      

       }  

        int n,r,sum=0,temp;    

          Console.Write("Enter the Number: ");   

          n = int.Parse(Console.ReadLine());  

          temp=n;      

          while(n>0)      

          {      

           r=n%10;      

           sum=(sum*10)+r;      

           n=n/10;      

          }      

          if(temp==sum)      

           Console.Write("Number is Palindrome.");      

          else      

           Console.Write("Number is not Palindrome");   */

               int i,fact=1;      

       for(i=1;i<=12;i++){      

        fact=fact*i;      

       }      

       Console.Write("Factorial of is: "+fact);    

​

    }  

 }  

​