​

using System;  

public class Exercise34 

{  

    public static void Main()

{

    int num,i,ctr,stno,enno;

    Console.Write("\n\n");

    Console.Write("Find the prime numbers within a range of numbers:\n");

    Console.Write("---------------------------------------------------");

    Console.Write("\n\n");      

​

    Console.Write("Input starting number of range: ");

    stno = Convert.ToInt32(Console.ReadLine());     

    Console.Write("Input ending number of range : ");

    enno = Convert.ToInt32(Console.ReadLine());     

    Console.Write("The prime numbers between {0} and {1} are : \n",stno,enno);

    for(num = stno;num<=enno;num++)

       {

         ctr = 0;

​

         for(i=2;i<=num/2;i++)

            {

             if(num%i==0){

                 ctr++;

                 break;

             }

        }

         if(ctr==0 && num!= 1)

             Console.Write("{0} ",num);

    }

    Console.Write("\n"); 

  } 

}