hcf and lcm of two number?

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace lcm

{

    class Program

    {

       static void Main(string[] args)

       {

           int num,num1,number,number1,rem=0,lcm1,hcf=0;

           num = Int32.Parse(Console.ReadLine());

           num1 = Int32.Parse(Console.ReadLine());

           number = num;

           number1 = num1;

           rem = num % num1;

           while (rem !=0)

           {

               rem = num % num1;

               num = num1;

               num1 = rem;

              

           }

           

           Console.WriteLine("hcf os number is " + num);

           lcm1 = (number * number1 )/ num;

           Console.WriteLine("lcm os number is " + lcm1);

       }

    }

}