using System;

 public class PrimeNumberExample

 {

     public static void Main(string[] args)

     {

         int n,i,flag=0;

         Console.Write("Enter the Number to check Prime:");

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

         for(i = 2;i < n;i++)

         {

             if(n % i == 0)

             {

                 Console.Write("Number is not Prime.");

                 flag = 1;

                 break;

             }

         }

         if(flag==0)

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

     }

 }

​